Feature: Material: Caps-TC4 titanium, Window-PC, Paracod-ATWOOD(diameter:4mm) Glow in the dark like our rovyvon a5/a5x GITD version. Would more brighter after being charged with sunlight, UV light, normal light. Your best everydaycarry gear. Ideal for paracord, straps, keychain, jewelry, multi tool, backpack, purse.