Yany - Luxurious kegel balls, crafted from High Quality Aluminium. Sleek, sophisticated design with body safe materials. Complete with two sets of interchangeable balls. For women who want 'Only The Best.' These Nalone Yany Kegal Balls will give you deeper, stronger orgasms with a touch of luxury. Materials: High Quality Aluminium, Size:Gold - 30g, Blue - 40g, Packaged: 180mm(L) x 94mm(W) x 50mm(D), Power:None Required