Belt size, foot ring, glove ring can adjust the size you need, more convenient to use.This product can be used in basketball, volleyball and football training.More professional and efficient. Vertical bounce has a great effect on improving leg strength. Improve leg muscles, chest strength, speed and agility.Lightweight but powerful: strong latex tube fabric protective film. Soft latex and rubber materials, comfortable and safe to use, light weight.The pulling force of the tension belt is 20/25/30/35LBSSpecifications:Material: LatexSize: 270*220*110mm/10.63*8.66*4.33"Net weight: 695gPackage Included: 1* Resistance Training RopeIf you have any questions about the product, please contact me, we will contact you within 24 hours and give you a satisfactory answer.Full-body workouts, unlimited venues.