The Sidas heated Winter H Flat insoles are very thin insoles that can be easily adapted to low-volume footwear. The heating element under the forefoot will keep your feet warm with a soft and pleasant warmth.

Thanks to the PRO batteries you can enjoy up to 8 hours of warmth, enough to fully enjoy your activity in the cold!

Instructions for use:

• Remove the existing insole from your shoes.
• Cut the insole to size
• Place the insole in your shoes
• The power cord should run up the length of your leg to the outside of your shoes.
• Connect the end of the cord to the PRO battery