Olivia J. 🇬🇧 – Nurse
As a nurse working long 12-hour shifts, I was constantly dealing with sore heels. These shoes have made a real difference in my comfort throughout the day.
Lottie | USB heated insoles you can cut to fit your shoes
5.0 ( 14410 Reviews )
Designed for 12-Hour Shifts
All-Day Comfort for Feet, Knees & Back
Slip-Resistant on Wet & Hard Floors
Find Your Perfect Fit
These shoes are designed with a comfortable, supportive fit and extra room where it's needed most.
✅ We recommend ordering your usual UK shoe size.
✅ If you're between two sizes, choose the larger size for the best fit.
Example
- If you normally wear UK 6, order UK 6.
- If you're usually between UK 6 and UK 7, we recommend ordering UK 7.
You can also measure your foot length using the size guide below to find your ideal fit. For most customers, simply ordering your usual UK shoe size is the best option.
If your Comfeva™ shoes aren't the perfect fit, you're covered by our 45-Day Wear Guarantee, giving you plenty of time to try them with confidence.
Wide Toe Box – Ideal for Wider Feet & Bunions
45-Day Wear Guarantee
Try risk-free with our 45-day wear guarantee today.
Trusted by 500,000+ Customers
Trusted by over 500,000 happy customers across Britain.
Free UK Delivery & Returns
Free UK delivery with hassle-free returns on every order.
All-Day Comfort
Enjoy lasting comfort throughout every shift, every single day.
Warm feet from the ground up
These heated insoles run on USB: connect the cable to a power bank or USB adapter (not included) and the carbon-fibre element warms to around 40 to 50 °C. Trim them along the guide lines to fit your boots or trainers. The soft short-fleece top feels comfortable from the first step.
Why you'll love it
- How it is powered: connect to a USB power bank or adapter (not included)
- Gentle heat: warms to about 40 to 50 °C
- Cut to fit: trim them to your exact shoe size
- Soft fleece top: cosy under your feet
- Two sizes: EU 35 to 40 or EU 41 to 46
Perfect for: football matches, fishing, ski trips and long days outdoors
Olivia J. 🇬🇧 – Nurse
As a nurse working long 12-hour shifts, I was constantly dealing with sore heels. These shoes have made a real difference in my comfort throughout the day.