Tumbler Boot Adapter 

Make your tumbler accessories more versatile with our Tumbler Boot Adapter! This stretchy band fits snugly around the bottom of your 40oz standard-size tumbler to adapt it for 3.25" shorty boots or to convert standard-size boots for use on the 32oz HydroJug.

At just 3/8" tall, the adapter adds the perfect lift and grip for a secure fit without adding bulk. Need extra adjustment? Simply stack multiple adapters to fit tumblers with narrower bases.

Compatible with Stanley, HydroJug, Simple Modern, BrüMate, Reduce, and other popular cup brands, this boot spacer makes it easy to mix, match, and personalize your cup style.

Keywords: tumbler boot adapter, HydroJug boot adapter, Stanley tumbler size adjuster, silicone base adapter, shorty boot ring, tumbler boot spacer, cup boot fit extender, tumbler accessories

Disclaimer: Results may vary depending on tumbler brand, model, and boot style.

Etch & Ember is an independent brand and is not affiliated with, endorsed by, or sponsored by Stanley, HydroJug, Owala, BrüMate, Simple Modern, or any other tumbler manufacturers referenced on this website. All product and brand names, logos, and trademarks mentioned are the property of their respective owners and are used solely to describe product compatibility. Etch & Ember accessories are independently designed products intended to fit certain drinkware styles and are not manufactured by or officially associated with those brands.