Knotty Boys - 9" Diameter Large Black & Hot Pink Fat Boy Style Survival Bracelet with Hand Tied Nylon Cord Construction. Model: KY109. Size: Large (9 diameter). Color: Black and hot pink. Hand tied nylon cord construction. Enables you to carry several feet of nylon cord that can be used in an emergency for countless survival applications. One inch of your wrist diameter equals approximately one foot of cord. 5/8" release buckle. Bulk packed.