About US
Lioninside® is an innovative and premium Dutch fitness brand, based in Sliedrecht. We combine advanced technology with timeless design to create fitness equipment that is not only powerful and durable, but also aesthetic and space-saving.
Our mission?
To deliver high-quality, innovative home fitness solutions – especially for athletes who choose quality, results, and efficiency.
Every product in our range, from our adjustable dumbbells to the latest kettlebell systems, is designed with attention to detail and manufactured in leading factories, carefully tested in the Netherlands.
What makes Lioninside® unique
- Premium materials — a finish you feel in the first second, not only after a year of use
- Compact, modular design that fits in every living room (no ugly rack needed)
- 3-year manufacturer’s warranty
- Tested by Men's Health and named "the best adjustable dumbbell we've ever used"
- Shipping and customer service from Sliedrecht — with us, you speak to a person, not a script
Lioninside® exists for people who are tired of home training always being a compromise: either expensive and ugly, or affordable and disposable.
We design equipment that combines the engineering of a professional gym with a design that fits into a modern interior — without compromising on strength, precision, or durability.
Whether you're building a complete home gym or want to train smartly in a corner of your living room: with Lioninside®, you invest properly once.
