Men's Sonic Ultra Tee Size:XXL Adjustable open heel fins grow

Adjustable open heel fins grow with your child

Press and release tap locks open for fast dispensing or washing

Expanded coverage while staying lightweight

4 Degree™ Elite Fit System - For a perfect fit that eliminates sock slippage

Stuff size (in): 8"x17"

Men's Sonic Ultra Tee Size:XXL Adjustable open heel fins growThe Sonic Ultra Tee is a responsive, lightweight tee for mountain runners pushing performance. Slim fitting and adaptable with built in stretch, its ideal for running on sunny mountain days or tackling challenging inclines. Highly responsive to your output, its cleverly designed to regulate your temperature. Built with ultralight Motiv Aero fabric, the Sonic Ultra Tee is fast drying, quick wicking and highly breathable. With its subtle mesh structure,