21 oz Standard Mouth Bottle Size:One Size • Ridged textured Unobtainium added

• Ridged textured Unobtainium added to the inside of the temple for retention

Only Non Chlorine Bleach If Needed

which can endure in the wild for hundreds of years

with a list of feature upgrades and 12 new models

21 oz Standard Mouth Bottle Size:One Size • Ridged textured Unobtainium addedStainless steel, cup holder compatible, fits right in your packour reusable, refillable 21 oz Standard Mouth insulated water bottle keeps cold drinks cold for 24 hours, hot drinks hot for up to 12 hours, and holds enough hydration for hours of fun. ________________________ TempShield double wall vacuum insulation keeps drinks cold up to 24 hours, hot up to 12 Flex Cap is leakproof when closed Honeycomb Insulated Cap for maximum temperature retention