21 oz Standard Mouth w/ Flex Straw Cap Size:21 oz Lightweight recycled nylon ripstop is

Lightweight recycled nylon ripstop is weather-resistant and highly packable

Hem drawstrings for silhouette adjustment and mud protection

Dual external water bottle pockets

Shade: silicone rubber

TSA-approved locks for security

21 oz Standard Mouth w/ Flex Straw Cap Size:21 oz Lightweight recycled nylon ripstop isDouble insulated stainless steel, to banish lukewarm drinks forever Designed for everyday adventures, the 21 oz Standard Mouth bottle from Hydro Flask is their mid range and most versatile product. Small enough to fit in a rucksack side pocket or your cars bottle holder but carrying over 600 ml of liquid, the 21 oz insulated bottle is the perfect companion for your daily travels. It features an airy leakproof Flex Straw making it super easy to hydrate