It's all about being comfortable and relaxed while you're at a spa hotel, so loose-fitting, casual clothing is the choice of attire for most guests. While you'll likely spend much of your time wearing a toweling robe and slippers, these are often supplied to guests when they check in. If you'd like to take advantage of the resort's fitness facilities, pack your sports gear and shoes. Hoping to reset and recharge in the swimming pool or hot tub? Don't forget to toss a swimsuit in your bag. Along with toiletries and other personal effects, bring some extra clothes too. It's nice to have something clean and fresh to slip into after an oil massage.