Collection: Tantrums

Founded in Pasadena, California, Tantrums was born on the local trails that shaped our training and love for the sport. We design hydration packs and performance gear for trail runners and endurance athletes who know that doing hard things starts way before the start line. The daily sacrifice paid in pre-dawn miles and sweat. Our products are built to perform at the highest level—no gimmicks, no distractions, no unnecessary features—just gear that feels like an extension of you.