This is a discontinued item. Limited quantities are available.

This Standard Mouth Insulated Sport Cap lets you hydrate one-handed and on the fly. It’s the first insulated sport cap specifically designed to keep water in your Hydro Flask bottle ice cold, sip after sip.

Fits Hydro Flask Narrow bottles and intended for the Wide Mouth Bottles.

Product Benefits

• Compatible with Hydro Flask Standard Neck Bottles
• Insulated for enhanced temperature protection
• Quiet, "no whistle" valve
• BPA-Free and Phthalate-Free
• Sport Cap is not intended for use with hot liquids and is not leakproof
• Lifetime Warranty

MPN: SMSC