The new balance training tool turns planks into an addictive game – and delivers real results while you're having fun

GIBBON, a leading innovator in slackline and balance training equipment, is proud to introduce the MARBLE CORE TRAINER – a groundbreaking training tool that transforms traditional core workouts into an engaging, skill-based experience.

The Concept: Brilliantly Simple

The GIBBON MARBLE CORE TRAINER works in combination with the GIBBON. A specially designed attachment lets users guide a marble through a track using nothing but their sense of balance. The result? A deceptively challenging core workout that keeps motivation high – because it simply doesn't feel like exercise.

Two Versions for Every SLACKBOARD Setup

The MARBLE CORE TRAINER is available in two configurations: one designed for single-line setups, and one for duo setups. The duo variant introduces additional lateral instability, significantly increasing muscle activation. Both versions can be rotated 90 degrees, enabling training in all directions – side-to-side or forward-backward – for a fully comprehensive workout.

The Science Behind the Fun

While the mind focuses on keeping the marble in motion, the body makes continuous micro-adjustments to maintain balance. This engages the abs, back, and shoulders simultaneously and without interruption. Planks, side planks, or dynamic movement sequences – every exercise becomes a challenge you'll want to return to again and again.

Built for Performance and Versatility

Made in Switzerland from durable, high-quality materials, the GIBBON MARBLE CORE TRAINER is compatible not only with the SLACKBOARD but also with SLACKRACK, tricklines, and other slackline setups. Children love it as an exciting balance game; adults value it as a smart and highly effective training tool.

Available Now

The GIBBON MARBLE CORE TRAINER is now available through authorized retailers and the official GIBBON online shop. Discover how balance becomes your playground.