















b.box + Lansinoh Sippy Cup
Featuring easy-grip handles made for little hands and a weighted silicone straw that lets your little one drink at an angle, our convenient Sippy Cup Twin Pack encourages confident, independent drinking. The unique no-spray pressure release valve makes leaks and spills a thing of the past, even with warm liquids – a win for parents everywhere.
The silicone straw has a handy pull tab for easy removal and cleaning. Dishwasher-safe and made without BPA, phthalates, or PVC, it’s a must-have for every parent's toolkit. Built to last for years of happy sipping, extend the life of the Sippy Cup with our Replacement Straw + Cleaner Set (sold separately).
- THE LEAKPROOF SIPPY CUP – No-spray pressure valve ensures easy, leak and spill-proof drinking with warm or cold liquids
- SIP FROM AN ANGLE – Soft and flexible weighted straw moves with the liquid, allowing little ones to drink from an angle
- EASY GRIP HANDLES – Just right for little hands, easy-grip handles encourage independent drinking
- HYGIENIC FLIP TOP LID – Keeps the straw top clean when not in use, wherever your adventures take you; mix and match the premium, matte-finish lid colors to personalize your cup
- SIMPLE TO CLEAN – Features pull-tab straw for easy removal and cleaning; dishwasher safe for added convenience
- REPLACEMENT STRAW + CLEANING SET – Extend the life of your Sippy Cup with our replacement straw and cleaning pack (sold separately)
- 1 (8 oz) Straw Sippy Cup
- 1 Straw Sippy Cup lid with silicone o-ring
- Flip-top straw with exclusive Lansinoh flower-shaped weight
For your child’s safety and health WARNING!
Always supervise your child when using this cup. Prolonged sucking of fluids may cause tooth decay. Never attach the cup to cords or clothing — strangulation hazard. Inspect spout before each use and discard at the first sign of wear. Do not use spout as a soother.
Before first use, sterilize all parts by boiling for 5 minutes. Clean thoroughly before each use — top rack dishwasher safe, but handwashing is best to preserve print. Do not use with hot (over 45°C / 113°F), carbonated, or sugary drinks. Be cautious when heating; pressure may build up. Always test the temperature before serving.
Avoid using in microwave with lid or metal parts; overheating and pressure may occur.
Download full care instructions here.
Baby’s First Straw Cup
Easy, leakproof drinking with warm or cool liquids
Innovative Weighted Straw
Lets little ones drink from an angle
FAQs
What moms want to know
Yes! Our sippy cup is designed for both warm and cool liquids. A built-in pressure release valve automatically releases pressure when you open the flip top, helping to minimize spills and sprays.
We don’t recommend it. The no-spill valve may make formula too thick to pass through, and residue buildup can be hard to clean. Formula is best used with our NaturalWave nipple lid cup, spout cup, or training cup. Always wash all parts thoroughly after each use.
We recommend washing the straws after each use with warm to hot (not boiling) soapy water, using our straw cleaner to clean inside the straw and valve. To remove the straw, use the pull tab release on the underside of the lid. Handwash in a clean wash basin used only for washing infant feeding equipment. Do not place directly in the sink, because germs in sinks or drains could contaminate the product.
Once straw and straw weight are removed, insert the cleaning brush from the bottom end of the straw, (not from the top). Gently massage brush in and around the straw. Repeat from the top. Be extra gentle and careful when cleaning the valve at the top of the straw where your little one sips to prevent tearing.
Gently pinch the straw to remove any excess liquid and allow the straw and other parts to completely dry before reassembling and storing.
The sippy cup straw is sterilizer safe. If using a microwave sterilizer, remove the weight.