Travel with your favorite drink when you cap it off with the Hydro Flask Standard Mouth Flex Cap. Compatible with your favorite standard mouth Hydro Flask, this insulated cap is sure to keep your hot drink hot, and also keeps your icy cold beverage, cold! Durable, flexible and designed to accommodate your on-the-go lifestyle, this Hydro Flask cap is a must-have.

• Compatible with your favorite standard mouth bottle
• Great for traveling and carrying
• Insulated design helps keep hot drinks hot and cold drinks cold
• Durable, flexible construction
• Mouth diameter: 48.5mm/1.91”
• Weight: 70g/2.5 oz.