Make sure that even your youngest kids are with the program and get them stoked about riding while keeping them out of hospital! the polymer grom incorporates industry standard sas-tec back protection in a super-simple, single-zipper harness design.Features:- Power-webbing: power-webbing is high-quality knitted webbing that gives you flawless performance and functionality in extreme conditions. it meets the highest standards of durability and strength.- Respiration mesh: respiration mesh is the standard jersey mesh material for our protection jackets. it’s a super-lightweight, ultra-breathable, 4-way stretch fabric for awesome comfort.- Ykk zippers: ykk zippers give you maximum quality and friction-free functionality in any conditions. they comply with the oeko-tex® standard 100, which analyzes potentially harmful substances in textiles.Specifications: - Weight: 240g.- Primary Material: 40% Synthetic Elastomer, 35% Nylon 15% Polyester, 7% Elastane, 3% Ethylene Vinyl AcetateTechnology:- SAS-tec: created in germany, sas-tec makes industry-standard, built-to-last soft-foam & epp protection. the protectors are lightweight, ventilated, ergonomically designed and washable. effective against all kinds of impacts, they can also withstand multiple hits.- Body map construction: body map construction is based on the latest anthropometric and ergonomic data, 3d body scans and advice from top sports scientists and injury specialists.- Articulating design: our articulating design concept is inspired by nature to give you total freedom of movement without compromising your safety and comfort.