Rooted in the sport of snowboarding, apparel brand Airblaster has teamed up with fellow Portland company Blackfern, drawing on the the brand’s surf-style sensibility for a fresh take on the Ninja Suit, what Airblaster calls the best long underwear on the planet. The Airblaster x Blackfern Ninja Suit is designed to be extra warm and versatile, making it an essential base layer for your next surf adventure or camping trip. It’s made with upcycled 4-way stretch fabric (91% Ecopoly and 9% Lycra) woven in a reverse waffle grid texture, providing extra warmth when combined with a shell, and maximum breathability when ventilated. Details include full-length front chest zip, thumb loops at the cuff and a 7-Panel form-fitting hood. Priced at $129.99, the limited-edition collab can be purchased here.