The Reflective Band has good elasticity and stretchy for most people. Made from stable material, suitable for your night walking and running. Also, it is great for runners, and cyclists. It is a for those outdoor activities enthusiasts. Features -Color:Green -Material:Elastic webbing, reflective film -Size(waist belt):54.00X4.50X1.00cm/21.22X1.77X0.39in -Size(wrist belt):29.50X3.00X0.20cm/11.59X1.18X0.08in -Size(arm belt):14.50X5.00X0.20cm/5.70X1.97X0.08in - Adjustable band. It is elastic, which can be adjusted conveniently to your size. - High visibility in the dark and at night. You can see the reflective strap from any degrees. To keep you and your family from getting hurt. - Easy to use. Reflective design allows you to stand out when running at night, providing security. - Made from arefully selected material, it is user-friendly and reusable. Highly reflective. Good choice for night walking and running outside. - Luminous Night Strap is perfect present for your friends and sports lovers. Package list: 5 x Waist Belt 20 x Arm Straps 10 x Wrist Belts 5 x Storage bags