ZQ Unisex Silicone Wedding Ring Exercise Bands- 4 Rings Pack Using 100% environmental protection silicone raw materials, security does not hurt the skin,while also protecting your finger safety. Beautiful fashion, exquisite workmanship, is a good gifts, jewelry, souvenir. Excellent flexibility and elasticity, bending, folding, wear-resisting, not easily damaged, lightweight, not easy ageing, not easy fade, long service life. 8.0mm Wide,2.8mm Thick Size:8(18.19mm),9(18.99mm),10(19.84mm),11(20.68mm),12(21.49mm)