Sedeta&reg; (Pack of 2) Protable Road Mountain Bike Bicycle Cycling MTB Reflective Safety Safe Leg Pants Clip Strap Beam Bottom Belt Lightweight Material: Interlayer: High elastic silicon steel sheet/Outer:Reflective lattice Size: 40 x 3cm Specially designed to tie up the pants, prevent the bottom of the trousers from sticking in the chain or cranking mechanism, and from smudging by oil and dirt Bundle it on the bicycle frame when not use, convenient to carry