21oz (621mL) Standard Mouth Flex Straw Cap Q3/4 2025 Honeycomb™️ Insulation for maximum temperature

Honeycomb™️ Insulation for maximum temperature retention

Introducing our new insulated

It’s the first insulated sport cap specifically designed to keep water in your Hydro Flask bottle ice cold

10" Product Weight 467g (1

21oz (621mL) Standard Mouth Flex Straw Cap Q3/4 2025 Honeycomb™️ Insulation for maximum temperatureFlip it and sip it. A cupholder compatible water bottle with leakproof Flex Straw Cap and booteasy to fill, easy to drink. Open it up, add your ice, and flip to sip. The insulated stainless steel keeps it cold for up to 24 hours. 24 hours cold, 12 hours hot TempShield double wall vacuum insulation Dishwasher safe Leakproof when closed Pure taste, no flavour transfer Fits most cupholders Durable stainless steel BPA Free Dishwasher safe Flex Straw Cap