About
After researching ways to enhance a kitesurfer’s performance on the water, we noticed one key aspect of this young sport had been largely overlooked: hydration and steady energy supply. As in many endurance sports, both are essential for peak performance. Given the unique conditions of kitesurfing—saltwater, sun exposure, and physical strain—we set out to address this challenge.
ProSip
A piece of equipment specifically developed for kitesurfing, designed to carry one liter of carbohydrate-rich liquid. It allows riders to move freely—even during inverted or high-rotation tricks—without interfering with safety systems on the water.
ProSip
Semester Project
2025
Muthesius University of Fine Arts and Design
Teampartner: Karla Biehrer
The bladder
Using an ultrasonic welding machine, we created a custom TPU bladder designed to minimize bulging when filled. This is achieved partly by limiting its maximum volume and partly by securing it inside the vest at all four corners, keeping it stretched flat. The result is a stable, secure fit regardless of liquid level or the rider’s movement and rotation.
Materials
The vest is primarily made from neoprene sourced from old wetsuits. Because only small sections are required, most discarded wetsuits can be repurposed for this use. Rigid components were added sparingly and only where they would not pose a risk of injury. A strong polypropylene strap runs around the vest and connects to the bladder at the back, creating a robust structure that keeps the vest securely in place on the body.
Comfort
To accommodate different body types, the vest includes adjustable elements for tightening or loosening the fit. Considerable effort went into preventing the vest from sliding backward or downward, ensuring it never interferes with the harness that sits on the rider’s lower back.