Nylon Cord Survival Bracelet With Whistle (2 Pack)Hand woven nylon cord which can be unwound in survival situations. Use for shelter building, splint lashing, spear attaching, animal snares, etc. Handy emergency whistle built into the side release buckle. One size. Measures 10" overall x 7/8"W x 1/4" thick. Weighs .26 lbs for2. Sold in 2 pack.