Professionalgrade Silicone Spout Replacement for Growing Babies Key benefits Softer, durable material: Platinumcured silicone that is 38% softer than generic replacements while maintaining tear resistance up to a 15 lb pull force. Easy to clean and sanitize: Designed for boiling at 300 F/148 C for 5 minutes, compatible with UV sanitizers, safe for dishwasher cycles up to 150 F, and usable with microwave sterilizing bags. Reliable leak control: 360 degree rim seal and dual valve system withstands 5 psi pressure and completed more than 10,000 tilt cycles with no leaks in testing. Comfortable feeding: Ultrasoft, flexible silicone with a gentle ripple texture for a familiar, comfortable feel and an ergonomic shape for easy latch and flow control. Ready replacement pack: Includes four clear silicone replacement spouts sized to match original cup dimensions for a secure fit. What is included 4x silicone replacement spouts, clear Engineered to match dimensions for compatibility with NUK Learner Cup and Active Cup models Product details Material: Platinumcured silicone Softness: 38 percent softer than typical replacements Tear resistance: Up to 15 lb pull force Sterilization and cleaning: Boiling at 300 F/148 C for 5 minutes, UV sanitizer safe, dishwasher safe up to 150 F, compatible with microwave sterilizing bags Leak performance: 360 degree rim seal plus dual valve design; tested to withstand 5 psi and over 10,000 tilt cycles with no leakage Use scenarios Travel and outings: Secure, leakresistant seal keeps liquids contained during stroller rides, car trips, and backpack storage. Daily use at home: Durable silicone and temperature cleaning options make routine sanitation simple and reliable. Night feedings or quick refills: Soft, familiar feel and controlled flow help make quick feedings smoother and less messy. Notes on fit and performance These spouts are manufactured to match the original spout dimensions for the listed compatible cup models. as needed when wear or damage is observed to maintain fit and performance.