Comotomo replacement nipples are made from silicone. Product descriptions repeatedly list silicone and describe the nipple as soft, skin‑like silicone.
Suggested ages vary by flow and style across listings. Examples include 0–3 months, 3 months and up, 6 months and up, and 0–15 months depending on the selected flow level or nipple style.
The Y‑cut (variable flow) nipple is described as supporting thicker liquids and letting flow increase with the baby’s suction; the 3‑hole style is presented as a Fast Flow option for quicker feeding.
Replacement packs are sold with two nipples per package according to the product details.
Replacement nipples labeled “MADE FOR COMOTOMO BABY BOTTLES GEN 2” are identified for Gen 2 bottles. Descriptions note they are compatible only with Gen 2 and will not fit Comotomo Gen 1 bottles.