In the Swim is Americas number 1 Direct Source for Pool Supplies! We offer the widest selection of pool and spa supplies while maintaining an unyielding commitment to the highest level of customer satisfaction through our dedication to quality products at the best possible prices. In The Swim was founded in 1982 by a husband and wife team. Shipping chlorine from the back of their garage and taking orders on their front porch, they began to have a vision that this could be something big.