OS1st FS6 Plus Performance Foot & Calf Sleeves
Product Details
Overview:
The OS1st FS6 Plus Performance Foot & Calf Sleeves combine the FS6 and the CS6 to provide you with medical-grade orthopedic support and graduated compression to help prevent and treat Plantar Fasciitis, Shin Splints, Achilles Tendonitis, and more. With 11 Zones of Compression Technology the... read more
OS1st FS6 Plus Performance Foot & Calf Sleeves - Black / Small: Women's 5-7.5 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 Plus Performance Foot & Calf Sleeves - Black / Small: Women's 5-7.5 is backordered and will ship as soon as it is back in stock.
About the OS1st FS6 Plus Performance Foot & Calf Sleeves
Product Details
Overview:
The OS1st FS6 Plus Performance Foot & Calf Sleeves combine the FS6 and the CS6 to provide you with medical-grade orthopedic support and graduated compression to help prevent and treat Plantar Fasciitis, Shin Splints, Achilles Tendonitis, and more. With 11 Zones of Compression Technology the FS6 Plus Sleeves are a thin and light sleeve that offers light, moderate, to firm compression fit easily under preferred performance socks while helping to wick away moisture.
Product Features:
- 11 Zones of Compression Technology
- Provide continuous stretch of the plantar fascia
- Supports the arch and overall foot structure
- Reduces impact vibration of calf muscle
- Post-event recovery
- Boosts oxygenation
- Achilles stabilization
- Seamless construction
- Anatomical design
- Made from soft nylon for comfort and durability
- Anti-bacterial
- Moisture-wicking
- Medical-grade light to firm compression
- Latex-free
- Each package contains one pair
Ideal For:
- Foot conditions: Plantar Fasciitis, Achilles Tendonitis, Heel/Arch Pain, Shin Splints, Leg cramps & fatigue, Enhanced oxygenation
Item #: OS1-FS6PLUS
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.




