Water bottle options abound these days, but the BPA-free MiiR Insulated Classic stands out due to user-friendly versatility. The wedge lid threads in and out easily, creating a secure vacuum seal to keep liquids in the double-walled cylinder hot or cold. The MiiR kept our coffee piping hot during morning commutes and errands, then chilled 500ml of water while we hiked and biked in the summer heat. $27; miir.com

The Pearl Izumi Fly Split Shorts take scorching summer conditions in stride. Lightweight material, a float liner, and side slits create superior fit with full range of motion. P.R.O. Transfer fabric promises moisture transfer, and delivers: Thanks to the breathable P.R.O., we stayed dry and comfortable when temps soared over 90 degrees. Blended P.R.O. and Minerale (fabric made from volcanic minerals used in water purification) in the liner absorb odor and enhance cooling. $55; pearlizumi.com  —Olivia Dwyer