The Rift Tumbler Lid is constructed from polished Tritan and BPA-free food-grade polymer, featuring our proprietary VaultLoc™ twist-lock lid to ensure a secure, leakproof seal. Its spring-loaded sip lid opens easily with one hand and locks firmly in place while you drink. A silicone gasket creates a tight seal to prevent spills, and a visual lock indicator ensures confident closure with every twist. Fully compatible with both the Rift Tumbler Collection as well as the Nest Mug, it’s an easy upgrade to your favorite brewing companion, or a spare lid for your Rift Tumbler. Tech Specs Dimensions: 1.6” Tall / 3.4” Diameter Weight: 3.6 oz (102g) - VaultLoc™ Twist-Lock System - BPA-Free Food Grade Polymer - Leakproof Silicone Gasket - Spring-Loaded Sip Lid with Locking Hinge - Polished Tritan Construction - Visual Lock Directional Indicator - Compatible with VSSL Nest Mug Care Dishwasher safe, remove Rift Link attached to lid prior to washing.