Extreme penetration! Penis prosthesis hollow strap on made of PVC, inner length for your penis 4.13 inches, maximum inside approxmately 1.41 inches The tip of the penile prosthesis is made of full material, length of the prosthesis tip, full material approximately 1.57 inches of the prosthesis tip approximately 1.57 inches. Straps are very elastic and adjustable with press studs for hips up to 47 inches, made of terylene and latex. The product is body safe materials and nickel free metal snaps.