Pro Power is a set of phallic rings of different sizes to be worn individually or combined both at the base of the penis and on the testicles to prolong erection, delay ejaculation and achieve a more intense and fulfilling orgasm.The rings are velvety to the touch and extremely elastic, to easily adapt to the different sizes of the penis.They are made of quality silicone and have an essential design with a smooth surface for a more substantial and stimulating penetration even for the partner/partner.It is advisable and strongly recommended to use a high dose of lubricant before applying the toy.The rings have different diameters: Small 1.5 - 4";Medium 1.7 - 5" and Large 1.9 - 6".