- Details
- Sustainability
- Fit guide
- Warranty
- Shipping
- Get help
Our exclusive Therm-a-Rest™ collab
Iconic soft ridges define this eye-catcher
The outdoorsman's sandal for adventuring
Therm-a-Rest™ has been making your time in the outdoors more enjoyable for decades and our Treeline Sport sandal delivers that same experience for your feet! Treeline Sport makes use of the camping pad's iconic soft ridges that provide ultimate cushioning with specially designed channels which promote the movement of air around the foot and directs the flow of water out from underneath the sole. With the Velcro strap-in system of a sport sandal for maximum stability and support for pursuing your wildest adventures!
Features
- Durable quick-dry straps with 3-point styling and velcro closures for a custom fit
- Therm-a-rest™ collab with signature soft-ridge footbed
- Happy Arch support for "insta-fit" on day one
- Vibram Ecostep rubber outsole with houndstooth groves for maximum grip and stability
- 100% Vegan, PFAS Free
- Water-friendly, cold water machine washable, air dry
- Each pair sold supports our global clean drinking water projects
- ✔ Covered by our 1 year warranty and our easy-peasy returns policy
- 😉 Free shipping style!



Sustainability
- 50% Recycled Polyester Webbing Strap
- 30% Recycled Rubber Outsole
- PVC Free
- Water-based Glue
- 100% Vegan
- Eco-Conscious Recycled/Recyclable Packaging
- Socially Responsible Manufacturing
- Thoughtfully Designed in California
- Made with Love in Vietnam
- Supports our Clean Drinking Water Projects




Fit guide
You can feel confident that our footwear fits true to size. Of course there can be slight variations in fit from style to style and brand to brand.
In most cases, we do not offer half sizes. If you are between sizes, we generally recommend sizing up as a little extra room tends to be better than too snug.
Additional questions on fit? Please contact us
Unisex Cloud9 & The Berty Slide size conversion
MENS | 7 | 8 | 9 | 10 | 11 | 12 | 13 | |||
WOMENS | 6 | 7 | 8 | 9 | 10 | 11 | ||||
CM | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
Men's size chart
US | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 |
EUR | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 |
UK | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 |
CM | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 |
Men's house shoes size conversion
Mens | Small | Medium | Large | X-Large |
US | 8-9 | 9.5-10.5 | 11-12 | 12.5-13.5 |
Women's size chart
US | 5 | 6 | 7 | 8 | 9 | 10 | 11 |
EUR | 36 | 37 | 38 | 39 | 41 | 42 | 43 |
UK | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
CM | 22 | 23 | 24 | 25 | 26 | 27 | 28 |
Women's house shoes size conversion
Womens | Small | Medium | Large | X-Large |
US | 6-7 | 7.5-8.5 | 9-10 | 10.5-11.5 |
Unisex Cloud9 slide size conversion
US | W6 | W7 | W8 | M7/W9 | M8/W10 | M9/W11 | M10 | M11 | M12 | M13 |
CM | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
Kid's sandals size conversion
US | 5-6 T | 7-8 T | 9-10 T | 11-12 K | 13-1 K | 2-3 K | 4-5 K | 6-7 K |
CM | 13 | 14.5 | 16.5 | 18 | 20 | 21.5 | 23 | 25 |
EU | 22 | 24 | 27 | 30 | 32 | 34 | 37 | 39 |
UK | 5K | 7K | 9K | 11K | 13K | 2 | 4 | 6 |
Warranty
Our one year warranty is a reflection of our commitment to excellence in design, manufacturing and performance.
Due to the impact of COVID-19, we are experiencing delays in warranty turnaround time, and your order may take longer than usual to be processed. For an immediate answer, please contact us. Thank you for your patience. We’re in this together!
That is a long way of saying we stand behind our product! :)
Shipping
We ship you packages once the orders are received and you can expect to have it in your hands within 7-10 days depending on your location in the USA.
- Freewaters.com orders are shipped via US Postal Service Priority, UPS Ground, or FedEx Ground service depending upon delivery address.
- Please allow 1-3 business days for your order to be processed by our warehouse before being shipped.
- Please account for another 1-5 business days for shipment. All orders are shipped from our Los Angeles based warehouse. We estimate 1-3 days transit time for West Coast orders, 2-3 days transit time for Mountain Zone, 3-4 days transit time for Central Zone, 4-5 business days for East Coast Zone.
- Holiday Shipping: be sure to order by 12/17 to ensure your order delivers in time for Christmas.
- Kindly understand these shipping times are estimates and due to the current pandemic and an increase on online shopping, shipping times may be longer. Freewaters is not able to guarantee delivery times.
For status updates on your order, please login in to your account or email us. Be sure to include the 5 digit ORDER # shown on the top right corner of your order confirmation.
Get help
We are ready to help you with whatever your product questions may be! If you have questions about this product specifically, please use the form to send us any questions you may have. You can also search our help desk to find some quick answers with no delay.
Email us
Fit guide
You can feel confident that our footwear fits true to size. Of course there can be slight variations in fit from style to style and brand to brand.
In most cases, we do not offer half sizes. If you are between sizes, we generally recommend sizing up as a little extra room tends to be better than too snug.
Additional questions on fit? Please contact us
Unisex Cloud9 & The Berty Slide size conversion
MENS | 7 | 8 | 9 | 10 | 11 | 12 | 13 | |||
WOMENS | 6 | 7 | 8 | 9 | 10 | 11 | ||||
CM | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
Men's size chart
US | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 |
EUR | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 |
UK | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 |
CM | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 |
Men's house shoes size conversion
Mens | Small | Medium | Large | X-Large |
US | 8-9 | 9.5-10.5 | 11-12 | 12.5-13.5 |
Women's size chart
US | 5 | 6 | 7 | 8 | 9 | 10 | 11 |
EUR | 36 | 37 | 38 | 39 | 41 | 42 | 43 |
UK | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
CM | 22 | 23 | 24 | 25 | 26 | 27 | 28 |
Women's house shoes size conversion
Womens | Small | Medium | Large | X-Large |
US | 6-7 | 7.5-8.5 | 9-10 | 10.5-11.5 |
Unisex Cloud9 slide size conversion
US | W6 | W7 | W8 | M7/W9 | M8/W10 | M9/W11 | M10 | M11 | M12 | M13 |
CM | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
Kid's sandals size conversion
US | 5-6 T | 7-8 T | 9-10 T | 11-12 K | 13-1 K | 2-3 K | 4-5 K | 6-7 K |
CM | 13 | 14.5 | 16.5 | 18 | 20 | 21.5 | 23 | 25 |
EU | 22 | 24 | 27 | 30 | 32 | 34 | 37 | 39 |
UK | 5K | 7K | 9K | 11K | 13K | 2 | 4 | 6 |