What happens when I place a backorder?
The second your size hits the warehouse, it heads straight to you. You’re instantly ahead of the waitlist.

What happens when I opt to be notified?
The moment your size is available we will email the wait list. First come, first served.

Features & Benefits
  • A graphic of waves with arrows pointing up.Impact-absorbing OOfoam™ technology in OOFOS’ advanced footbed geometry.
  • A semi-circle with dots completing the full circleRounded, cupped heel designed to enhance impact-absorption and stability with every step.
  • Lightweight, flexible & packable for ultimate travel ability.
  • A graphic of a washing machineMachine Washable. Air Dry.
Details

Stay cozy with the OOcoozie Thermo. The mule-style slip designed for colder days, it features proprietary OOfoam™technology for comfortable cushioning that supports all of your winter recovery activities. Insulated Primaloft® surrounds your foot in warmth for days when lounging is the first and last part of your daily schedule. This lightweight and packable style is an absolute must-have to help you stay toasty.

Shipping & Returns

Please allow up to 2-4 business days for your orders to be processed prior to shipment. We do not process orders on the weekends or on US Holidays. These orders will be processed on the next business day. This includes express shipping options. Any order placed with an express shipping option must be delivered to a physical shipping address.

Shipping 

Standard/Economy
10-12 Business Days- $15 flat fee or Free for orders over $98.99

The Standard and Economy shipping service within Canada is provided by UPS with final delivery typically provided by local carriers. Please note we do not ship to PO Boxes in Canada, please use a physical address. 

Express
2-4 Business Days- $35 flat fee

The Express shipping option refers to the amount of shipping time in-transit, not including required time for processing. Orders must be placed by 12 pm ET to ship the same business day. Orders placed after this time will ship the next business day. Business days do not include weekends or holidays. 

Please note: Express shipping options cannot be delivered to a PO Box. Any order that is placed with our express options needs to be sent to a physical address.

If you have any questions regarding shipping, please contact us directly. Express shipping is not eligible for a refund unless it is delayed by the carrier. A signature may be required.

OOFOS.ca ships within Canada. For international shipping, refer to our list of international partners.

Returns

Our mission at OOFOS is to make yOO feel better! If you aren't satisfied with your OOFOS purchase (whether purchased on Oofos.ca or at an OOFOS event), we will gladly accept a return up to 30 days from the delivery date of your order. 

Orders placed between now and December 31st are eligible for returns until January 31st, 2026 (excluding Final Sale items).

IF PUCHASED AT OOFOS.CA:

  • We offer returns for a refund within 30 days of the arrival date if you are not completely satisfied with your OOFOS. 
  • A return shipping and handling fee of $15 CAD per order will be deducted from your refund total.
  • Items marked as Final Sale are not eligible for returns. Items marked as Sale are eligible for returns.
  • Once your return has been sent back and processed by our team, you will receive an email notification with confirmation of your refund.
  • All refunds will be processed to the original form of payment used for purchase.
  • Express shipping charges are non-refundable unless delayed by the carrier.
  • OOFOS is not responsible for any non-OOFOS merchandise returned to our facility.
  • Returns cannot be mailed to our warehouse without prior approval through the returns process outlined below. OOFOS is not responsible for any shipping charges or lost items that occur as a result of customers not following these OOFOS return procedures.
  • OOFOS is not responsible for any non-OOFOS merchandise returned to our facility
  • OOFOS products purchased online from EBAY, TEMU, Poshmark, ThredUp, or other unauthorized third-party sellers are not eligible for return, exchange or warranty claim, as we do not authorize our retailers to sell on such sites.

HOW TO START YOUR RETURN FOR YOUR OOFOS.CA ORDER:

Looking to start a return? Just visit oofos.ca/return to start your return and please don't hesitate to reach out to us if you have any further questions:

  • Enter your OOFOS.CA order number. This number will be seven digits long and can be found in any of your order emails, or on the packing slip included in your shipment.
  • Enter the email used to place the order on OOFOS.CA, or phone number entered at checkout, or the postal code to which the order was shipped.
  • Select the item you would like to ship back to us. Item unable to be selected? It’s possible the return window has ended or there may be a return in progress for your item already. If you believe this is an error please contact our Customer Care team for personal assistance.
  • Review your information to confirm your returning items, shipping address, and contact information. Read and accept terms listed, then click the Submit Return button to send your Return Request to our team.
  • If your return request is approved automatically, you will see a return status page with information on next steps to return your original order and continue the remainder of the returns process. If your return has an item or detail that requires a quick check from our team, we will follow up with approval or next steps as soon as we get a chance to review it.
  • Return your items via Canada Post within 4 weeks of receiving your label. If you need to make an adjustment to your return method, you must contact our team prior to dropping off your return.
  • Your return or exchange will be completed by our team as soon as your RMA has been processed. Once complete, you’ll receive an email with details of your refund or new order.
  • OOFOS products purchased from an OOFOS-authorized store or authorized Amazon reseller should be returned to the location they were purchased. If you are unable to do so, we will gladly evaluate possible exchange options for a pair of the same value as verified by proof of purchase from an OOFOS-authorized seller. To qualify for an exchange, the shoes must be clean and free of wear as determined by our team. We are not able to offer refunds for items not purchased directly from OOFOS.ca.

IF PURCHASED IN-STORE OR THROUGH AN ONLINE RETAILER:

OOFOS purchased from a store or online retailer should be returned to the location they were purchased. We are unable to process a refund for any order not placed on OOFOS.CA.

OOFOS products purchased from any social commerce site such as eBay or PoshMark are not eligible for return or warranty claim, as we do not authorize our retailers to sell on the site and the products are sold by the general population.

Why to Buy
  • American Podiatric Medial Association Badge

    Awarded an American Podiatric Medical Association (APMA) Seal of Acceptance for promoting foot health

    9 out of 10 customers surveyed felt relief

  • A ribbon with a star in the middle.

    More than 12 million pairs sold
    with 425k+ 5-star reviews

  • A graphic of a Trophy

    Worn by the Pros
    Chosen by athletes in all major US pro leagues

  • A ribbon graphic.

    Project Pink: Over $6M Donated
    A percentage of every OOFOS.com purchase goes to patient care and cancer research

Formulated to feel good

Learn more about our unique and proprietary OOfoam™ Technology.

  • Absorbable Impact
    OOfoam™ technology absorbs 37% more impact than traditional footwear.

  • Reduces Joint Stress
    Unique footbed design reduces stress on knees, ankles and other joints.

  • Minimizes Odor
    Closed-cell foam is machine washable and designed to minimize odor.

OOfoam™ Technology

Watch to learn more about our unique and proprietary OOfoam™ Technology.

Overall rating: 4.3311434 / 5 from 761 reviews.

AI Generated Review Summary

The Women's OOcoozie Thermo Mule offers excellent comfort and support, with a modern mule style designed for colder temperatures. The OOfoam™ technology absorbs impact, reducing stress and aiding recovery. While some customers found the sizing inconsistent, the overall fit and warmth received positive feedback.

Summary topics

  • Design (4%): It was reported by customers that the product has an excellent good looking and comfortable design, although some found it sloopy.
  • Comfort (5%): Customers loved the great comfort and support provided by these socks, making them a popular choice.
  • Mule Comfort (8%): It was reported by customers that they absolutely love these mules for their comfort and warmth.
  • Fit (11%): Customers raved about the fit of the product, mentioning that it was perfect and comfortable.
  • Support (11%): Customers loved the excellent support provided by the product, which was mentioned multiple times in the reviews.

Review topics: ["size","fit","length","support","weight","color","fabric","issues","material","design","quality","line","look","feel","comfort","service","style","customer service","weather","shoes","warmth","difference","construction","slippers","comfy","solution","width","feet","oofos","mules"].

Review highlights

  • "Look good, feel great (fits wide)."Kendra C.
  • "Looks good, feels good, warm cozy feeling!"Ricki B.
  • "Amazing fit, they look great, are waterproof, I've walked through wet grass and a snowy driveway with ease."Kathleen M.

Reviews

Waiting to hear about my return

"These were too small. The thick sole was not as comfortable as I thought it would be. Last week I initiated a return amd am still waiting to receive my confirmation email and shipping label. Why does it need to take "3-5 business days" to review my return?"

cnodpt (2/5)

Saving my back!

"Got a pair of slippers and slides after my dad and sister told me how much they love them. I have noticed less pain when i am on my feet more when wearing these shoes."

Savannah R. (5/5)

I love these shoes. These

"I love these shoes. These shoes are super comfortable and I wear them everywhere. Shipping was super quick also. I have two pairs now and nothing about them has any negative. They are also very easy to clean."

Lori C. (5/5)

The most comfortable slippers I’ve ever

"You are incredible! Despite the fact that they’re white, it look like nursing shoes, they are the most incredibly comfortable I’ve ever owned. The fabric is soft and slightly stretchy… Fits, amazingly, slightly loose, but great fit still. Foot bed is soft and comfortable, not squishy not hard, the perfect just in between."

Kristin C. (5/5)

not great

"Very comfortable, but they REALLY don't wear well. Notice the wear in the attached photo--both on the top of the shoe near my heel and on the tread. These were a Christmas gift in 2025. . . so they are just barely 4 months old. And I am a 77 year old retired woman, so not exactly giving them hard usage. For the price, they should have lasted a LOT longer."

Gay (4/5)

Women's OOcoozie Thermo Mule - Black

"I bought these to use as slippers, which I wear every day in our house. These are so comfortable! The only negative thing about them is when I put these on, I can slide my fingers inside the top of the mule onto the top of my foot, down towards my toes. . . my foot is fairly narrow and I have this problem with some shoes, most flip flops and slippers. That's why I said they are too wide. . . just a little though. I do believe these will stay on my feet much better than the thinner fuzzy mules that OOFOS discontinued. That material stretched out over time after wearing and I did my fair share of tripping over them. Even though I said they are too wide, I still gave them 5 stars because I absolutely love them. Since most of my family and friends have "normal" feet, I will recommend these slippers to them."

Lori V. (5/5)

Very comfy slippers

"These slippers have such great support and help with my plantar fasciitis."

Betha (5/5)

Incredible footwear

"OOFOS were recommended to assist with pain relief from plantar fasciitis. From the moment I put them on my pain was alleviated. Now I wear the slippers or the clogs (which I purchased first) all day when I can. To my great relief they have also helped with back pain. It’s not an exaggeration to say they have been life changing. I’m now able to wear my other shoes for short periods without pain. Please develop boots that can be worn in the winter as well!"

twasney W. (5/5)

Helps foot pain

"I bought these to use as a house shoe after developing horrible foot pain in pregnancy. I stay home with my other kids and am on my feet all day. These shoes are super comfortable and have helped so much! My only complaint is they are very warm-- it would be awesome if they could make the upper part of the shoe a more breathable material. They are also not cute but the comfort it worth it for me :)"

Christy P. (4/5)

Why I fell

"These new slippers do not have an adequate grip on the bottom and I slipped and fell on the hardwood floor of my bedroom. The orthopedist said I have a contusion of my right shoulder and knee. The shoulder is still very painful. I will be returning the slippers."

Nancy H. (1/5)

Q&A