Material: silicone gelSize:10254350-20mm10254351-30mm10254352-40mm10254353-50mm10254354-60mmPlease allow1- 2mm error due to manual measurement and make sure you do not mind before ordering.shape:Hemisphereweight:10254350-62.84 grams10254351-67.45 grams10254352-75.7 grams10254353-88.3 grams10254354-106.8 gramsquantity:1pcsIt will hold the shape for years.Keep...