Quality: made of quality silicone, resistance/practical: its comfortable zipper guarantees a correct seal, avoiding unnecessary leaks; the material with which it is made favors its easy cleaning/design: it has an elegant and at the same time youthful design, ideal for a school environment and suitable for both girls and boys, optimal for returning to quality/price ratio: the materials with which our products are manufactured, together with their reasonable price, make it an unbeatable purchase in relation to its quality and price