Training Bundle
Add core strength and focus to your balance training. The Marble Trainer clips onto your SlackBoard line and adds a marble maze: hold a plank or stand on it, then tilt the board to guide the marble through the track. Your core keeps working while your focus stays on the marble. The Exercise Cards give you a new move to try each week, and the Stand keeps your board out and ready.
For SlackBoard and SlackBoard Plus · Shop SlackBoards
Board not included.
What's included
What’s in the box

SlackBoard Stand
The SlackBoard Stand is a simple and elegant way to hold and display your SlackBoard when not in use.
$29.99 value
See full details: SlackBoard Stand
SlackBoard Exercise Cards
The SlackBoard Exercise Cards support every step of your balance journey with 52 unique moves to build balance, strength, cardio, and mobility.
$19.99 value
See full details: SlackBoard Exercise Cards
GIBBON Marble Core Trainer - Single
The SlackBoard Marble Trainer is a wooden plank with a built-in marble maze that attaches to your SlackBoard or SlackBoard Plus with…
$39.99 value
See full details: GIBBON Marble Core Trainer - Single
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25% OFF
Roots Rocker Plus
$229.99$172.49 -
25% OFF
Zen Plus
$229.99$172.49 -
25% OFF
Balance Plus
$229.99$172.49 -
25% OFF
Butterfly Plus
$229.99$172.49 -
25% OFF
Astronaut Plus
$229.99$172.49 -
20% OFF
Balance
$199.99$159.99 -
20% OFF
Butterfly
$199.99$159.99 -
20% OFF
Astronaut
$199.99$159.99
FAQ
Can I use my HSA or FSA?
Yes! Through our partner Truemed, qualified customers can pay with HSA or FSA funds at checkout.
What are the benefits of balance training?
Balance training helps build core strength, stability, coordination, and body awareness, so you can move with more confidence in everyday life and perform better in the activities you love. It also challenges the small stabilizing muscles that support better movement, mobility, and reaction time. Whether you’re an athlete, a kid, or just want to stay active and steady, better balance benefits every body.
What is your returns policy?
We’re confident you’ll love your GIBBON product. If it’s not the right fit, you can return it within 30 days for a full refund, minus return shipping costs.
Shopping for the holidays? We’ve extended our return window, so purchases made between October 15 and December 31, 2026 can be returned through January 31, 2027.
What is your warranty policy?
We offer a 2-year warranty on all products, which covers manufacturing defects or failure caused by normal use.
What’s the weight limit?
Weight limits vary by product. For SlackBoards, the SlackRack, and SlackYard, we recommend a maximum user weight of 400 lb (181 kg). For Slacklines, we recommend one person at a time, with a maximum user weight of 250 lb (113 kg).
When will my order ship?
We ship Monday to Friday from San Diego, California, and most orders ship within 1 to 3 business days. When your order ships, you’ll get an email with your tracking number. Orders to Alaska and Hawaii typically ship via USPS.
Which GIBBON product is right for me?
For balance and core training at home, start with a SlackBoard. It’s compact, easy to use, and works indoors or outside.
Want the feel of slacklining without needing trees? Choose a SlackRack for a freestanding setup you can use indoors or outside, or a SlackYard for a backyard setup on grass.
Have two trees? Go with a classic SlackLine.
Who are GIBBON products for?
GIBBON is for all ages and ability levels, from kids and first-timers to athletes and older adults. If you’re new to balance training or want more stability, the SlackBoard Plus is a great place to start.














