... 4Effective Alopecia Areata laser cap Our anti-hair loss ,Alopecia Areata ,Hair Rejuvenation ,Hair restoration laser regrowth hair cap/hat working for THICKER, FULLER ... don't have to hold the device (unlike a laser hair comb); Hands Free, completely fits in almost any hat Get Thicker ... ×170×70mm (L×W×H, bare device)Weight: 0.21KG Hair Loss Treatment Lasers ---Portable Bald Head Hair Growth laser cap