PERFECT FIT — Our silicone boot is specially designed to fit Stanley The Quencher H2.0 40 oz, 30 oz, 20 oz tumblers, PREMIUM MATERIAL — BPA FREE, Thickened, Anti-Slip, Anti-noise, This durable bottom boot helps protect against dents, dings and damage Better Protection = This protective silicone cover compatible with stanley 40 oz tumbler with handle, stanley 30 oz tumbler with handle, stanley iceflow Easy to Install and Remove: Our silicone boot for Stanley cup with proper elasticity for a secure fit. Maximum protection: This durable bottom boot helps protect against dents, dings, and damage NWT Smoke and pet free home