Red wavelength is 660nm

The diamond-shaped head structure can be used as a tool

-No painting

4 inch/6 x 6cm(L x W)

Plantar Fasciitis with Caomaer's Arch Support shoes Insoles - All Day Shock Absorption for Men & Women! Size:women 4-6.5 Red wavelength is 660nmPlantar Fasciitis with Caomaer's Arch Support shoes Insoles All Day Shock Absorption for Men & Women! Designed for: The shoe cushion pads inserts & insoles are designed for outdoor work heavy duty and sports athletic. It help to relieve Sore Feet, Bunion, Barefoot, Arthritis, Heels Pain, Achilles Tendinitis, . They are suitable for unisex boots, casual shoes, leather shoes, skate shoes, cross hiking shoes, soccer shoes,socks shoes, cycling shoes, golf