100% Neoprene ⚽Perfect Solo training - This new evolution soccer kick trainer is perfect for solo training such as soccer, volleyball and rugby ( Football is not included ) ⚽Adjustable waist belt - belt strap is adjustable to fit waist sizes (33"-39"). Great football training aid for kids and adults ⚽Adjustable stretchy strap - 6ft elastic strap stretches to 18ft. Perfect for altering the length the ball will kick out to and for adapting to different environments such as back yards ⚽Flexible for different sized balls, fits ball sizes 3, 4 and 5. It can helps with developing skills like ball control, passing, touch and reaction ⚽GET MULTI-ASPECT TRAINING - Shooting, passing, receiving, juggling, ball control, throw-ins, all of these training program only needs the solo kick trainer