These high quality cast protectors are manufactured by Lifeswonderful and are designed to last the duration of your treatment, typically up to 12 weeks. Certified as a Class I Medical Device under EC Directive 93/42/EEC Annex VII. Please note that users with a long-term condition should consider these consumable and they will require replacement from time to time. Cast covers are designed for showering & bathing, and not for swimming. Please read the instructions carefully before use, in particular those showing how to wear the protector, in order to avoid damaging the Neoprene seal which can allow water to enter.