You know Hydro Flask for its bottles and drinkware, but they also make some damn good coolers, and select colors are 25% off today, just in time for summer.
This deal applies both to the 24L cooler tote and the 22L cooler backpack, and you can add on free shipping with promo code FASTSHIP19. Both will keep ice frozen for 48 hours, feature lightweight construction, and will never leak thanks to YKK Aquaseal zippers.