Based on this product's specifications, here are some alternatives and similar models
Neoprene Paddle Float Master MAS-B844-red, 36 cm, protective cover for oar shaft
Summary description:
Neoprene paddle float Master MAS-B844-red is a 36 cm protective cover designed to fit an oar shaft. Made from neoprene material, it provides cushioning, prevents wear and reduces vibration transfer to the grip. Suitable for kayaking, canoeing and small boat use where protecting the paddle shaft and improving grip comfort is needed during transport and storage.