Summer activities often require a specialized wardrobe, whether it’s Speedo tuxedos for formal pool parties or deep-space bikinis for rocket skiing. Prep for all seasonal pastimes with today's Groupon: for $15, you get $30 worth of beach apparel and goods at Island Ski and Board Shop in Coeur d'Alene, Idaho.

Along with its array of seasonal snow and water skis, snowboards, and wakeboards, Island Ski and Board Shop bedecks summery shoppers in head-to-hanging-10 swimwear and sandwear for fashionable action shots on the store's water trampolines and towable inflatables. Authentic, surf-inspired Reef sandals ($20–$70) keep the sensitive soles of men, women, children, and unidirectionally pointed starfish off the scorching pavement. Reef also conceals skivvies with shirts and board shorts. Otherwise, promenade along the public pool in O'Neill swimwear for men and women ($35–$70). Sunglasses ($18–$200) by brands such as Kreed, Crush, VonZipper, and Oakley occlude oculi against glares from the sun, ocean, and staunch opponents of nude-eye beaches. Island Ski and Board Shop also supplies cement-surfers with longboards from Sector 9, Santa Cruz, Arbor, and Landyachtz.