Please select the genuine replacement part for the Piao I Travel Buddy that you would like to purchase:
1) The silicone pressure relief seal (with knob) fits in the top cap of all Piao I Travel Buddies that do not come with a straw.
2) The silicone O-ring is fits in the bottom cap of all models and sizes of Travel Buddy infuser bottles.
3) The 3.17cm (1.25") top straw (the one used for sipping) fits all sizes of the Travel Buddy with auto-straw. This is a replacement for the short straw only, not the long bottom straw.