Grosmimi Weighted Straw & Teat Set Stage 1 | 6M+ All parts (straw tip, kit, gender, tube, weight) are separated and can be washed and dried hygienically. Straw Faucet Material : Rubber (Silicone) Heat Resistant Temperature : 180c Daerong Gender Material : Polypropylene Heat Resistant Temperature : 100c Straw Tube Material : Rubber (Silicone) Heat Resistant Temperature : 180C