QUALITY LATEX CORE MATERIAL: Bungee straps with carabiner hook are made of high-quality durable interwoven rubber and oxford fiber, wrapped with nylon yarn for external use, has 3 times the pulling force and strong rebound force and increase the life of the bungee cord. SAFER TO USE: Carabiner clips at both ends of the bungee can proper position and fixed on the anchor point, carabiner hook won't bend, break or slip off. elastic rope has a plastic protective cover at the carabiner, bungee cord and clasp are perfectly fastened at both ends. keep your backpack safe at any time and in any outdoor activity. Don't worry about the size of the item causing the trouble that the rope cannot bind the item. MULTIFUNCTIONAL WIDELY USAGE: Bungie straps with metal hooks are perfect home, work, recreational, travel. elastic band not only to fix mobile boxes and luggage roof rack, but also to fix trash cans, hand carts, bike, motorcycle, camping, tents, heavy objects, tarps, clotheslines, gardening and outdoors fixings. MULTI-PACK: 4 Piece pack black bungee extension ropes both sides with galvanized metal hooks,sturdy and antirust, length:90cm, wide:8mm. Heavy-duty elasticity strap can prevent slippage and improve cargo safety.The super stretch range can be stretched infinitely according to the size of the item. SATISFACTION GUARANTEE: Luggage rope set of 4 which are durable,suitable for different occasions, can meet many different needs.