Retractable Elastic Helmet Strap:Bike tensioner stretching length range, suitable for items of different sizes. you can stretch it to a suitable length to securely fix helmets, luggage and other objects. Application:Storage luggage and helmet, fix goods and loads on cars, trucks, motorcycles, bicycles , etc, or attaching tents when camping outdoors. It is suitable for mountain bikes,motorcycles,daily home,camping and outdoor activities. With Hook:3 pieces luggage strap with double hook to meet your needs at different occasions. The grip is improved, the design of the bicycle strap can disperse the load capacity, very firm! Material:Bike luggage strap is made of premium Nylon - High elasticity and stretchability for stretch it to suitable length in order to tie your items tightly. Easy to Carry:Best choice for long distance. Easy to store and transport. The elastic luggage strap provides enough length and strength to secure bulky luggage.