Beach Invisible Stickup Foot Skid-proof Insole

Features:
An insole that can stick on feet.
Nano technology, ultralight material, do no harm to human.
Thermal insulation, waterproof, anti-cut and anti-slip.
Invisible design and well protecing your feet.
Easy to put it on and off, resuable, can be repeatedly used.
Can be used on beach, seaside, swim, run, climbing etc.
Fine-quality, soft and comfortable.