The instinct to stay warm and dry is a primal one, witnessed in man’s desire to dwell in caves and monkey's desire to avoid waterparks. Fight deluges with today’s Groupon: for $25, you get $50 worth of outdoor apparel from Helly Hansen’s online store or Newport, RI location.

Helly Hansen outfits all outdoor enjoyers with a battalion of garb that fights chills and minimizes bulk, including items from brands such as Merrell, Chaco, Vibram, and its own eponymous line. Helly Tech, the store's weather-combating technology, imbues apparel with durability and rain resistance, allowing it to withstand extreme mountainous hikes, oceanic voyages, and relaxation marathons. The Lifa stripe crew, like most grandmothers, wraps torsos in a comfortable moisture-eradicating hug ($36.00), and New Aden pants encase legs in a wetness-fighting combination of hydrophilic technology that whisks sweat from skin and microporous, waterproof fabric ($59.00). Run free with a pair of Vibram FiveFingers ($79.00), or soak up the sun with a Helly Hansen marble bikini ($49.00).