FlexGRID Button Up
HANDUP FlexGRID Button Ups combine the laid-back style of a Hawaiian shirt with the breathable, stretchy performance of mountain bike apparel. Built for riders who want to hit the trails, grab a drink, and keep the same shirt on for the rest of the day.
- Breathable polyester/spandex jersey fabric with four-way stretch
- Moisture-wicking and quick-drying material for active comfort
- UPF 25+ sun protection for sunny adventures
- Secure branded four-hole buttons
- Riding-friendly cut designed to reduce shirt and sleeve ride-up
Best for: Mountain biking, casual trail rides, gravel riding, warm-weather adventures, post-ride hangs, and riders who want a fun, functional button-up that performs on and off the bike.
FlexGRID Button Up Features
Athletic Button Up Sizing Guide

Athletic Button Up

Additional Details
Why We Made Technical Button Ups
Button Up Features & Materials
Tops Wash Instructions
Crash Replacement
Hey, we’ve all crashed and torn up our gear. If a crash caused the issue, we have a crash replacement program. Just send us an email on our Returns and Exchanges page and we'll get you taken care of.
Warranty
All HANDUP products come with a warranty that carries up to 1-year from the original purchase dates for defects not caused by regular wear and tear.















































