+4
Spenco
RX Comfort Insoles
Unisex
Our Price
$17.00
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
Designed for everyday wear and active use, this full-length insole delivers reliable comfort from heel to toe. Lightweight cushioning helps absorb impact and reduce foot fatigue throughout the day. A simple upgrade that enhances comfort across a wide range of footwear.
Comfort & Performance
- Heel-to-toe cushioning for consistent comfort
- SpenCore material absorbs shock and impact
- Helps reduce pressure during daily movement
- Lightweight feel for all-day wear
- Supports improved overall foot comfort
Design & Materials
- Full-length insole profile
- Exclusive SpenCore cushioning layer
- Durable nylon construction
- Available in seven sizes for better fit
- Clean, functional green finish
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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