Kit: Set Of 4, 2 Stck Black And 2 Stck Grn, 35 * 5Cm, Which Can Be Expanded To 40Cm In The Extended State. It Has Elasticity And Scalability, Elasticity And Thick Double Reflection Tape With Self-Adhesive. . Safety Considerations: It Is Very Suitable For People Who Like Outdoor Activities At Night. Once The Double Reflective Film Is Exposed To Light, It Will Turn Bright Silver. Reflection Helps To Be Better Visible In Outdoor Activities. Improve Traffic Safety. Wide Application Range: Suitable For Outdoor Running, Cycling, Motorcycle Riding, Hiking, Sliding, Etc. Children, Adults And The Elderly All Use It. . Easy To Use: Self-Made Seat Belt Paper Can Be Carried Or Taken Out At Will. You Can Carry It With You To Your Arms/Wrists, Calves And Knchel, Skin And Clothes For Children, Adults Or The Elderly To Use And Give It To Your Family Or Friends. S7-1200 Programmable Controller