+4
Spenco
RX Comfort Insoles
Unisex
Our Price
$9.95
Shoe Size Chart
Women's Shoe Size Conversion
| US & Canada | 10 | 10.5 | 11 | 11.5 | 12 | 4 | 4.5 | 5 | 5.5 | 6 | 6.5 | 7 |
| AU | 7 | 7.5 | 8 | 8.5 | 2 | 2.5 | 3 | 3.5 | 4 | |||
| UK | 8 | 8.5 | 9 | 9.5 | 10 | 2 | 2.5 | 3 | 3.5 | 4 | 4.5 | 5 |
| Europe | 40-41 | 41 | 41-42 | 42 | 42-43 | 35 | 35 | 35-36 | 36 | 36-37 | 37 | 37-38 |
| Inches | 10.2 in | 10.3 in | 10.5 in | 10.7 in | 10.9 in | 8.5 in | 8.3 in | 8.5 in | 8.8 in | 8.9 in | 9.1 in | 9.3 in |
| Centimeters | 25.9 cm | 26.2 cm | 26.7 cm | 27.1 cm | 27.6 cm | 20.8 cm | 21.3 cm | 21.6 cm | 22.2 cm | 22.5 cm | 23 cm | 23.5 cm |
Men's Shoe Size Conversion
| US & Canada | 10 | 10.5 | 11 | 11.5 | 12 | 13 | 14 | 15 | 16 | 6 | 6.5 |
| AU | 9 | 9.5 | 10 | 10.5 | 11 | 12 | 13 | 14 | 15 | 5 | 5.5 |
| UK | 9.5 | 10 | 10.5 | 11 | 11.5 | 12.5 | 13.5 | 14.5 | 15.5 | 5.5 | 6 |
| Europe | 43 | 43-44 | 44 | 45-45 | 45 | 46 | 47 | 48 | 49 | 39 | 39 |
| Inches | 10.6 in | 10.8 in | 10.9 in | 11.1 in | 11.3 in | 11.6 in | 11.9 in | 12.2 in | 12.5 in | 9.3 in | 9.5 in |
| Centimeters | 27 cm | 27.3 cm | 27.9 cm | 28.3 cm | 28.6 cm | 29.4 cm | 30.2 cm | 31 cm | 31.8 cm | 23.5 cm | 24.1 cm |
Big Kids' Shoe Size Conversion (7–12 Years)
| US & Canada | 3.5 | 4 | 4.5 | 5 | 5.5 | 6 | 6.5 |
| AU | |||||||
| UK | 2.5 | 3 | 3.5 | 4 | 4.5 | 5 | 5.5 |
| Europe | 35 | 36 | 36 | 37 | 37 | 38 | 38 |
| Inches | 8.6 in | 8.8 in | 9 in | 9.1 in | 9.3 in | 9.5 in | 9.6 in |
| Centimeters | 21.9 cm | 22.2 cm | 22.9 cm | 23.2 cm | 23.5 cm | 24.1 cm | 24.4 cm |
Little Kids' Shoe Size Conversion (4–7 Years)
| US & Canada | 1 | 1.5 | 10.5 | 11 | 11.5 | 12 | 12.5 | 13 | 13.5 | 2 | 2.5 | 3 |
| AU | ||||||||||||
| UK | 13 | 14 | 9.5 | 10 | 10.5 | 11 | 11.5 | 12 | 12.5 | 1 | 1.5 | 2 |
| Europe | 32 | 33 | 27 | 28 | 29 | 30 | 30 | 31 | 31 | 33 | 34 | 34 |
| Inches | 7.8 in | 8 in | 6.6 in | 6.8 in | 7 in | 7.1 in | 7.3 in | 7.5 in | 7.6 in | 8.1 in | 8.3 in | 8.5 in |
| Centimeters | 19.7 cm | 20.3 cm | 16.8 cm | 17.1 cm | 17.8 cm | 18.1 cm | 18.4 cm | 19.1 cm | 19.4 cm | 20.6 cm | 21 cm | 21.6 cm |
Toddlers' Shoe Size Conversion (9 Months–4 Years)
| US & Canada | 10 | 3.5 | 4 | 4.5 | 5 | 5.5 | 6 | 6.5 |
| AU | ||||||||
| UK | 27 | 19 | 19 | 20 | 20 | 21 | 22 | 22 |
| Europe | 9 | 2.5 | 3 | 3.5 | 4 | 4.5 | 5 | 5.5 |
| Inches | 6.5 in | 4.3 in | 4.5 in | 4.6 in | 4.8 in | 5 in | 5.1 in | 5.3 in |
| Centimeters | 16.5 cm | 10.8 cm | 11.4 cm | 11.7 cm | 12.1 cm | 12.7 cm | 12.7 cm | 13.3 cm |
About this product
From daily commutes to long shifts on your feet, this full-length orthotic keeps every step aligned and supported.
Firm arch support and moldable structure move naturally while stabilizing from heel to toe.
Built for everyday wear, it’s an easy upgrade for everything from sneakers to boots.
Comfort & Performance
- Full-length heel-to-toe cushioning
- Firm arch support to reduce pronation and supination
- Shock-absorbing Spencore cushioning layer
- Flexible, moldable plastic for custom fit
- 4-way stretch fabric helps prevent blisters
- Antimicrobial technology controls odor
Design & Materials
- Durable Spencore impact-absorbing material
- Breathable stretch top cloth
- Moldable arch structure for precise placement
- Sized options for improved overall fit
- Ideal for running shoes, work shoes, boots, and dress styles
Spenco Size Chart
General Shoe Conversion Chart - Women's
| US & Canada | 4 | 4.5 |
5 | 5 | 6 | 6.5 | 7 | 10 | 10.5 | 11 | 11.5 | 12 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AU | 2 | 2.5 | 3 | 3.5 | 4 | 7 | 7.5 | 8 | 8.5 | |||
| UK | 2 | 2.5 | 3 | 3.5 | 4 | 4.5 | 5 | 8 | 8.5 | 9 | 9.5 | 10 |
| Europe | 35 | 35 | 35-36 | 36 | 36-37 | 37 | 37-38 | 40-41 | 41 | 41-42 | 42 | 42-43 |
| Inches | 8.5 in | 8.3 in | 8.5 in | 8.8 in | 8.9 in | 9.1 in | 9.3 in | 10.2 in | 10.3 in | 10.5 in | 10.7 in | 10.9 in |
| Centimeters | 20.8 cm | 21.3 cm | 21.6 cm | 22.2 cm | 22.5 cm | 23 cm | 23.5 cm | 25.9 cm | 26.2 cm | 26.7 cm | 27.1 cm | 27.6 cm |
General Shoe Conversion Chart - Men's
| US & Canada | 6 | 6.5 |
10 | 10.5 | 11 | 11.5 | 12 | 13 | 14 | 15 | 16 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| AU | 5 | 5.5 | 9 | 9.5 | 10 | 10.5 | 11 | 12 | 13 | 14 | 15 |
| UK | 5.5 | 6 | 9.5 | 10 | 10.5 | 11 | 11.5 | 12.5 | 13.5 | 14.5 | 15.5 |
| Europe | 39 | 39 | 43 | 43-44 | 44 | 45-45 | 45 | 46 | 47 | 48 | 49 |
| Inches | 9.3 in | 9.5 in | 10.6 in | 10.8 in | 10.9 in | 11.1 in | 11.3 in | 11.6 in | 11.9 in | 12.2 in | 12.5 in |
| Centimeters | 23.5 cm | 24.1 cm | 27 cm | 27.3 cm | 27.9 cm | 28.3 cm | 28.6 cm | 29.4 cm | 30.2 cm | 31 cm | 31.8 cm |
General Shoe Conversion Chart - Big Kids' (7–12 Years)
| US & Canada | 3.5 | 4 | 4.5 | 5 | 5.5 | 6 | 6.5 |
| UK | 2.5 | 3 | 3.5 | 4 | 4.5 | 5 | 5.5 |
| Europe | 35 | 36 | 36 | 37 | 37 | 38 | 38 |
| Inches | 8.6 in | 8.8 in | 9 in | 9.1 in | 9.3 in | 9.5 in | 9.6 in |
| Centimeters | 21.9 cm | 22.2 cm | 22.9 cm | 23.2 cm | 23.5 cm | 24.1 cm | 24.4 cm |
General Shoe Conversion Chart - Little Kids' (4–7 Years)
| US & Canada | 1 | 1.5 | 2 | 2.5 | 3 | 10.5 | 11 | 11.5 | 12 | 12.5 | 13 | 13.5 |
| UK | 13 | 14 | 1 | 1.5 | 2 | 9.5 | 10 | 10.5 | 11 | 11.5 | 12 | 12.5 |
| Europe | 32 | 33 | 33 | 34 | 34 | 27 | 28 | 29 | 30 | 30 | 31 | 31 |
| Inches | 7.8 in | 8 in | 8.1 in | 8.3 in | 8.5 in | 6.6 in | 6.8 in | 7 in | 7.1 in | 7.3 in | 7.5 in | 7.6 in |
| Centimeters | 19.7 cm | 20.3 cm | 20.6 cm | 21 cm | 21.6 cm | 16.8 cm | 17.1 cm | 17.8 cm | 18.1 cm | 18.4 cm | 19.1 cm | 19.4 cm |
General Shoe Conversion Chart - Toddlers' (9 Months–4 Years)
| US & Canada | 3.5 | 4 | 4.5 | 5 | 5.5 | 6 | 6.5 | 10 |
| UK | 19 | 19 | 20 | 20 | 21 | 22 | 22 | 27 |
| Europe | 2.5 | 3 | 3.5 | 4 | 4.5 | 5 | 5.5 | 9 |
| Inches | 4.3 in | 4.5 in | 4.6 in | 4.8 in | 5 in | 5.1 in | 5.3 in | 6.5 in |
| Centimeters | 10.8 cm | 11.4 cm | 11.7 cm | 12.1 cm | 12.7 cm | 12.7 cm | 13.3 cm | 16.5 cm |
Shipping & Returns
No-sweat, free shipping & returns!
United States Orders
- Free shipping 3-5 days
- Free returns/exchanges
- Expedited 2-day shipping also available
International Orders
- Free shipping
- Hassle-free returns/exchanges
- Restocking fee applied
*Shipping within Continental US: 2-5 days. International shipping: 7-11 days. See shipping policy here.
**Shoes must be unworn. See return policy here.
***Price match guarantee does not apply to Clearance or Final Sale items. See details here.
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