If you are looking for a one-piece lifeguard suit, then a traditional lifeguard suit could be the best option. Traditional active bathing suits usually have keyhole backs. They are typically made out of Lycra, have a stretchy quality, and will remain comfortable even if you are going to be sitting in a chair for long amounts of time. There are several situations where the one-piece active swimwear might be appropriate for you, including if you are trying to maximize your skin coverage to prevent a sunburn or if you are going to be working as a lifeguard at a facility that has a more conservative feel or if you are going to be active in the water teaching classes, making saves often, or even giving swim lessons. A traditional lifeguard suit could be the best option for you. These suits usually have lifeguard written across the front.