# Munchkin Baby Cups for Packing in a Bag: Leak\-Proof Features Which baby cups are leak\-proof when packed in a bag? Munchkin 7oz\. Click Lock Bite Proof Trainer Cup \- 1pk: Click Lock technology locks the lid in place with an audible click, giving triple assurance against spills 100% leak\-proof guarantee backed by a 100% replacement guarantee Munchkin 9oz Click Lock Bite Proof Sippy Cup: Click Lock technology locks the lid with an audible click 100% leak\-proof guarantee Munchkin 7oz Click Lock Weighted Straw Cup: Click Lock technology gives a leak\-proof seal A flip\-top lid covers the straw while travelling Munchkin 10oz\. Simple Clean Straw Cup: Includes a one\-way valve to prevent spills and leaks, which must be activated first ### 1. [Munchkin 7oz\. Click Lock Bite Proof Trainer Cup \- 1pk](/products/ucp/megababiesusa-com/8827246182654) (sold by megababiesusa\.com) 100% leak\-proof guarantee backed by a 100% replacement guarantee - Lid lock or seal: Click Lock technology locks the lid in place with an audible click, giving triple assurance against spills (listing) - Leak guarantee: 100% leak\-proof guarantee backed by a 100% replacement guarantee (listing) - Lid design: - - Valve: One\-piece valve is easy to clean (listing) ### 2. [Munchkin 9oz Click Lock Bite Proof Sippy Cup](/products/ucp/megababiesusa-com/9270566682878) (sold by megababiesusa\.com) 100% leak\-proof guarantee - Lid lock or seal: Click Lock technology locks the lid with an audible click (listing) - Leak guarantee: 100% leak\-proof guarantee (listing) - Lid design: - - Valve: One\-piece valve that is easy to clean (listing) ### 3. [Munchkin 7oz Click Lock Weighted Straw Cup](/products/ucp/megababiesusa-com/9270562947326) (sold by megababiesusa\.com) Click Lock technology gives a leak\-proof seal - Lid lock or seal: Click Lock technology gives a leak\-proof seal (listing) - Leak guarantee: - - Lid design: A flip\-top lid covers the straw while travelling (listing) - Valve: - ### 4. [Munchkin 10oz\. Simple Clean Straw Cup](/products/ucp/megababiesusa-com/9270557606142) (sold by megababiesusa\.com) Includes a one\-way valve to prevent spills and leaks, which must be activated first - Lid lock or seal: - - Leak guarantee: - - Lid design: The straw peels open for easy, thorough cleaning and tucks into the lid for germ\-free on\-the\-go use (listing) - Valve: Includes a one\-way valve to prevent spills and leaks, which must be activated first (listing) Every value in the table is a fact RoboTrunk checked, linked to the page it came from\. A dash means no checked fact fills that cell\. Prices and stock change, so this page prints neither: each product name links to its RoboTrunk page, which shows them live\. Written 2026-10-11T09:14:13.244Z. This page is published by RoboTrunk, a store built for shopping agents. The store named on this page sells the product and ships it. RoboTrunk is not the seller and never holds the money. Buying works in one path. RoboTrunk's tools prepare a checkout at that store, then hand back a short-lived link. The person approves the total; once RoboTrunk has checked the store's total against it, the person is given the checkout link to tap in their own browser, or, if the person prefers and gives permission, their agent may open the link and finish there, and payment always happens on the store's own checkout page. RoboTrunk never takes the payment or sees a card. Where the rest of this site is: - /agent/story.md is what RoboTrunk is and how it works, in full. - /agent/tools.json is every tool, its arguments and its answers. - /agent/merchants is every store you can buy from through RoboTrunk. - /products/ucp is every store's indexed products. - /products/search is one search across every store, in plain words. - [What RoboTrunk is](/agent/story.md) - [Every tool, in your browser through WebMCP](/agent) - [The tools and how to call them](/agent/tools.json) - [The stores you can buy from](/agent/merchants) - [Every store's products](/products/ucp) - [Search every store at once](/products/search)