Durable, BPA-Free Tritan Material
Crafted from the same high-grade Tritan as your ThermoFlask, these replacement straws for ThermoFlask 40oz are BPA-free, odorless, super sturdy, and fully reusable. They stay strong through daily use, so you enjoy reliable sipping without cracks or wear.
Complete Kit for Everyday Use
Get 8 replacement straws for ThermoFlask 40oz plus 2 cleaning brushes. Perfect quantity to keep your insulated stainless steel water bottle ready anytime—no more interruptions from a lost or broken straw.
Save Money and Protect the Planet
Lost or damaged your straw? Grab these ThermoFlask 40oz replacement straws instead of buying a whole new bottle. Cut costs by up to 90% while reducing waste and conserving resources for a greener choice.
Perfect Fit—Check Size First
Designed specifically for ThermoFlask 40oz water bottles. Also works with ThermoFlask 24oz or 32oz models—just trim to length with scissors. Not compatible with other brands or sizes—measure yours before ordering!
100% Satisfaction Promise
Any issues with your ThermoFlask replacement straws? Contact us anytime. We respond in under 10 minutes during business hours to make it right.
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