Rinsten specializes in the development and production of innovative bicycle accessories. Rinsten Spring is a universal underseat shock absorber makes the ride more comfortable and healthier for the body by minimizing vibration from road bumps. It damps vertical impacts and vibrations from the surface. It allows to apply less effort while riding and takes pressure of the back. By working in three dimensions it eliminates stress from cyclist’s body. It is the first bicycle shock absorber in the world which can be installed on children bicycles (from 2 years old).