The Florence Marine X Short Sleeve Trainer Shirt features a 30+ UPF rating, an airflow-friendly knit with 4-way stretch and an antimicrobial construction so you stay cool and fresh when you’re going for your personal best on the trail or in the gym. Great for surfing, climbing, hiking and staying comfortable while staying active on long hot days. UPF 30+ rating blocks harmful sun rays. Breathable, moisture-wicking and antimicrobial fabric keeps you cool and fresh. 4-way stretch Set on / raglan sleeves improve fit and flexibility. bluesign® certified. 100% polyester Machine wash cold. Hang dry.