const updateHeaderMetrics = () => { const header = document.getElementById('header'); const rect = header.getBoundingClientRect(); const headerHeight = rect.bottom; document.documentElement.style.setProperty('--header-height', `${headerHeight}px`); }; window.addEventListener('DOMContentLoaded', updateHeaderMetrics); window.addEventListener('resize', updateHeaderMetrics); const header = document.getElementById('header'); const resizeObserver = new ResizeObserver(entries => { for (let entry of entries) { const rect = entry.target.getBoundingClientRect(); const headerHeight = rect.bottom; document.documentElement.style.setProperty('--header-height', `${headerHeight}px`); } }); resizeObserver.observe(header);

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FITUSBOARD balance board standing office skateboarding skiing surfing simulation ADHD ankle strength trainer

FITUSBOARD Balance Board: Standing Office & Extreme Sports Simulation Trainer

$96.26

Ankle Strength Trainer-

Standing Balance Board

Standing Balance Board

Professional Cork Mats

Quantity

Sustainably made

Secure payments

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Estimated Delivery：Feb-07 - Feb-11

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SKU: -Standing Balance Board-A001108041

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