VentaPak makes backpack ventilation systems that create a breathable gap between the wearer and the pack, addressing the heat, sweat, and strain of ordinary backpacks. Founder Mark Dingle developed the original frame after his bike commute left him with a sweat-soaked shirt, then refined the design through prototypes, industrial design work, and a successful Kickstarter campaign. The company now offers both an add-on airflow frame for existing packs and the integrated Breeze 25 backpack, serving more than 4,000 customers.