“Overall, the Sealant Funnel works as intended, and it’s honestly a little surprising just how much quicker and easier it is to use this compared to the two existing methods.”

— Jame Huang, n-1 Substack

“It's one of those forehead-slap ideas, offering a funnel that threads onto any regular tubeless valve stem (with the valve core removed). ”

— Dave Rome, Escape Collective

“Although there are many ways to fill tires with sealant, the Straz sealant funnel seems to be the best way to do so.”

— Nic Morales, Bikepacking

“Available in four colors, the Sealant Funnel is a small but welcome upgrade for anyone running tubeless. If you’re still using a scoop or fighting with a sticky injector, this might just be the fix you didn’t know you needed.”

— Jeff Barber, Singletracks