OS1st FS6 Performance Foot Sleeves - Single or Pair
Product Details
Overview:
The OS1st FS6 Performance Foot Sleeves - Single or Pair are the #1 selling brace in the running market for Plantar Fasciitis. Featuring 6 Zones of Compression Technology to help relieve and prevent foot pain and discomfort, the FS6 sleeve provides continuous stretch for the... read more
OS1st FS6 Performance Foot Sleeves - Single or Pair - Pair / White / Small: Men's 3-5.5 / Women's 4-6.5 is backordered and will ship as soon as it is back in stock.
Men's Size Conversions
| U.S. SIZE | EURO SIZE | UK SIZE | INCHES | CM |
| 6 | 39 | 5.5 | 9 1/3" | 23 3/4 cm |
| 6.5 | 39 | 6 | 9 1/2" | 24 1/10 cm |
| 7 | 40 | 6.5 | 9 2/3" | 24 1/2 cm |
| 7.5 | 40-41 | 7 | 9 5/6" | 25 cm |
| 8 | 41 | 7.5 | 10" | 25 2/5 cm |
| 8.5 | 41-42 | 8 | 10 1/6" | 25 4/5 cm |
| 9 | 42 | 8.5 | 10 1/3" | 26 1/4 cm |
| 9.5 | 42-43 | 9 | 10 1/2" | 26 7/10 cm |
| 10 | 43 | 9.5 | 10 2/3" | 27 cm |
| 10.5 | 43-44 | 10 | 10 5/6" | 27 1/2 cm |
| 11 | 44 | 10.5 | 11" | 28 cm |
| 11.5 | 44-45 | 11 | 11 1/6" | 28 2/5 cm |
| 12 | 45 | 11.5 | 11 1/3" | 28 4/5 cm |
| 13 | 46 | 12.5 | 11 1/2" | 29 1/5 cm |
| 14 | 47 | 13.5 | 11 2/3" | 29 3/5 cm |
| 15 | 48 | 14.5 | 11 5/6" | 30 cm |
| 16 | 49 | 15.5 | 12" | 30 1/2 cm |
Women's Size Conversions
| U.S. SIZE | EURO SIZE | UK SIZE | INCHES | CM |
| 4 | 35 | 2 | 8 1/3" | 20 1/5 cm |
| 4.5 | 35-36 | 2.5 | 8 1/2" | 21 3/5 cm |
| 5 | 36 | 3 | 8 2/3" | 22 cm |
| 5.5 | 36-37 | 3.5 | 8 3/4" | 22 1/4 cm |
| 6 | 37 | 4 | 9" | 22 4/5 cm |
| 6.5 | 37-38 | 4.5 | 9 1/6" | 23 cm |
| 7 | 38 | 5 | 9 1/3" | 23 3/4 cm |
| 7.5 | 38-39 | 5.5 | 9 1/2" | 24 1/10 cm |
| 8 | 39 | 6 | 9 2/3" | 24 1/2 cm |
| 8.5 | 39-40 | 6.5 | 9 5/6" | 25 cm |
| 9 | 40 | 7 | 10" | 25 2/5 cm |
| 9.5 | 40-41 | 7.5 | 10 1/6" | 26 cm |
| 10 | 41 | 8 | 10 1/3" | 26 4/5 cm |
| 10.5 | 41-42 | 9 | 10 1/2" | 26 3/5 cm |
| 11 | 42 | 9.5 | 10 2/3" | 27 1/10 cm |
| 11.5 | 42-43 | 10 | 10 5/6" | 27 1/2 cm |
| 12 | 43 | 10.5 | 11" | 28 cm |
Children's & Youth Size Conversions
Children's Size Conversions
| U.S. SIZE | EURO SIZE | UK SIZE | INCHES | CM |
| 5.5 | 21 | 4.5 | 5 1/6" | 13 1/10 cm |
| 6 | 22 | 5 | 5 1/4" | 13 1/3 cm |
| 6.5 | 22 | 5.5 | 5 5/12" | 13 3/4 cm |
| 7 | 23 | 6 | 5 7/12" | 14 1/5 cm |
| 7.5 | 23 | 6.5 | 5 3/4" | 14 3/5 cm |
| 8 | 24 | 7 | 5 11/12" | 15 cm |
| 8.5 | 25 | 7.5 | 6 1/12" | 15 1/2 cm |
| 9 | 25 | 8 | 6 1/4" | 15 4/5 cm |
| 9.5 | 26 | 8.5 | 6 5/12" | 6 1/3 cm |
| 10 | 27 | 9 | 6 7/12" | 16 3/4 cm |
| 10.5 | 27 | 9.5 | 6 3/4" | 17 1/5 cm |
| 11 | 28 | 10 | 6 11/12" | 17 3/5 cm |
| 11.5 | 29 | 10.5 | 7 1/12" | 18 cm |
Youth Size Conversions
| U.S. SIZE | EURO SIZE | UK SIZE | INCHES | CM |
| 12.5 | 30 | 11.5 | 7 5/12" | 18 4/5 cm |
| 13 | 31 | 12 | 7 7/12" | 19. 1/4 cm |
| 13.5 | 31 | 12.5 | 7 3/4" | 19 3/5 cm |
| 1 | 32 | 13 | 7 1/3" | 18 3/5 cm |
| 1.5 | 33 | 14 | 7 1/2" | 19 cm |
| 2 | 33 | 1 | 7 2/3" | 19.5 cm |
| 2.5 | 34 | 1.5 | 7 5/6" | 20 cm |
| 3 | 34 | 2 | 8" | 20 1/3 cm |
| 3.5 | 35 | 2.5 | 8 1/6" | 21 3/4 cm |
| 4 | 36 | 3 | 8 1/3" | 21 1/5 cm |
| 4.5 | 36 | 3.5 | 8 1/2" | 21 3/5cm |
| 5 | 37 | 4 | 8 2/3" | 22 cm |
| 5.5 | 37 | 4.5 | 8 5/6" | 22 2/5 cm |
| 6 | 38 | 5 | 9" | 22 4/5 cm |
| 6.5 | 38 | 5.5 | 9 1/6" | 23 1/3 cm |
| 7 | 39 | 6 | 9 1/3" | 23 7/10 cm |
Please Note: Most manufacturers have their own specific sizing. If you have any questions, please feel free to contact our Customer Service Team.
OS1st FS6 Performance Foot Sleeves - Single or Pair - Pair / White / Small: Men's 3-5.5 / Women's 4-6.5 is backordered and will ship as soon as it is back in stock.
About the OS1st FS6 Performance Foot Sleeves - Single or Pair
Product Details
Overview:
The OS1st FS6 Performance Foot Sleeves - Single or Pair are the #1 selling brace in the running market for Plantar Fasciitis. Featuring 6 Zones of Compression Technology to help relieve and prevent foot pain and discomfort, the FS6 sleeve provides continuous stretch for the plantar fascia tendon, helping support the arch and entire foot structure, while stabilizing the ankle and achilles tendon. All this creates a better sense of balance and helps alleviate and prevent foot pain. Their low-bulk design promotes medical-grade compression to assist with circulation for maintaining and rebuilding muscles, while wearing under socks and in footwear.
Product Features:
- 6 Zones of Compression Technology
- Medical-grade compression
- No-bulk foot sleeve design
- Fits easily under socks and in footwear
- Provides continuous stretch of the plantar fascia tendon
- Supports the foot arch and overall foot structure
- Stabilizes the achilles tendon and ankle
- Provides targeted relief of common foot pain and discomfort such as plantar fasciitis, achilles tendinitis, swollen feet, arch pain, and heel pain
- Sold as a Single (1 sleeve) or a Pair (2 sleeves)
Ideal For:
- Foot conditions: plantar fasciitis, achilles tendonitis, swollen feet, arch pain, heel pain
6 Zones of Compression Technology:

- Light compression. Smooth, flat opening for forefoot & toes
- Moderate compression. Helps boost venous flow and stabilize forefoot
- Firm compression. Lifts the plantar fascia and boost venous system
- Moderate compression. Provides shape-to-fit comfort to cradle foot
- Firm compression. Supports the achilles tendon and boosts venous system
- Light compression. Wide and smooth cuff for comfort
Sizing:
- X-Small: Children 12 - Men's 3 / Women's 4
- Small: Men's 3-5.5 / Women's 4-6.5
- Medium: Men's 6-9.5 / Women's 7-10.5
- Large: Men's 10-13 / Women's 11+
- X-Large: Men's 13.5-15
- 2XL: Men's 15.5+
Looking for a night-time solution? Check out the OS1st DS6 Night Time PF Treatment Sleeve!
Item #: OS1-FS6
Use
For more information on using your new insole, visit our Help Center to see common usage FAQs.
Care
For more information on caring for your insoles, visit our Help Center to see common product care FAQs.
Warranty
For additional information on wear-test guarantees, see our Returns Policy.
Returns
All products — except for gift cards, clearance items, and closeout items — may be returned within 60 days of delivery so long as the product is in brand-new, unworn, unused condition and is returned in the original product condition along with all of the original product packaging and labels.
Products with wear-test guarantees can be returned even if used/worn. See our Returns Policy for more information.






