Amazon.com : Tannus Unisex's Armour Puncture Round Protection, high Grip with Low Rolling Resistance, Easy Assembly, Reusable, Free tyre and Tread Selection, red, 20 x 1.95-2.50 : Sports & Outdoors
Review: Tannus Armour's MTB tire inserts beg the question "How low can you go?" - Bikerumor