+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 running, training, and everyday movement, these cushioning insoles deliver comfort where it matters most. Shock absorption and responsive energy return work together to support every step. Built for versatility, they help keep feet feeling fresh through active days.
Comfort & Performance
- Dual-layer cushioning for shock absorption
- Energy-return design for responsive movement
- Helps reduce foot fatigue and discomfort
- Supports injury prevention during activity
- Enhances comfort for sports and daily wear
Design & Materials
- Lightweight insole construction
- Durable cushioning system for long-lasting use
- Designed to extend shoe lifespan
- Low-profile fit for easy placement
- Suitable for athletic and casual footwear
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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