{"product_id":"back-to-the-fundamentals-rash-guard","title":"BACK TO THE FUNDAMENTALS | RASH GUARD","description":"Somewhere between your first awkward shrimp and the moment it finally clicked, jiu jitsu became part of who you are. The Back to the Fundamentals rash guard is a nod to the era when training was simple, mats were louder, and learning meant showing up, tapping often, and coming back for more.\u003cbr\u003e\n\u003cbr\u003e\nInspired by classic 80s training vibes and the timeless truth that fundamentals never go out of style, this rash guard celebrates grips, frames, posture, and pressure. No shortcuts. No gimmicks. Just the core movements that build real jiu jitsu.\u003cbr\u003e\n\u003cbr\u003e\nDesigned for daily rolls, open mats, and long rounds, this rash guard offers a smooth compression fit that moves with you, stays locked in place, and holds up session after session. Breathable fabric keeps you cool while reinforced stitching ensures durability through hard training and countless washes.\u003cbr\u003e\n\u003cbr\u003e\nWhether you are a white belt learning the basics or a seasoned grappler refining details, this rash guard is a reminder that progress always comes from going back to the fundamentals.\u003cbr\u003e\n\u003cbr\u003e\nTrain smart. Roll clean. Stay timeless.\u003cbr\u003e\n\u003cbr\u003e\n• 88% recycled polyester, 12% elastane (in the EU)\u003cbr\u003e\n• 81% recycled polyester, 19% spandex (Lycra) (in the US)\u003cbr\u003e\n• Fabric weight: 6.78 oz.\/yd.² (230 g\/m²) (in the EU)\u003cbr\u003e\n• Fabric weight: 7.52 oz.\/yd.² (255g\/m²) (in the US\/MX)\u003cbr\u003e\n• Soft, stretchy, comfortable, moisture-wicking fabric\u003cbr\u003e\n• Fitted cut\u003cbr\u003e\n• UPF 50+ protection\u003cbr\u003e\n• Premium quality\u003cbr\u003e\n• The recycled content of this product is certified under GRS (Global Recycled Standard)\u003cbr\u003e\n• The fabric is OEKO-TEX 100 standard certified\u003cbr\u003e\n• Blank product components sourced from Mexico and Spain","brand":"Grapple Guard","offers":[{"title":"2XS","offer_id":44465528406198,"sku":"6031461_21458","price":69.99,"currency_code":"USD","in_stock":true},{"title":"XS","offer_id":44465528438966,"sku":"6031461_21459","price":69.99,"currency_code":"USD","in_stock":true},{"title":"S","offer_id":44465528471734,"sku":"6031461_21460","price":69.99,"currency_code":"USD","in_stock":true},{"title":"M","offer_id":44465528504502,"sku":"6031461_21461","price":69.99,"currency_code":"USD","in_stock":true},{"title":"L","offer_id":44465528537270,"sku":"6031461_21462","price":69.99,"currency_code":"USD","in_stock":true},{"title":"XL","offer_id":44465528570038,"sku":"6031461_21463","price":69.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0637\/0050\/0662\/files\/all-over-print-mens-recycled-short-sleeve-rash-guard-white-front-69421670e5a0f.jpg?v=1765938812","url":"https:\/\/grappleguard.com\/fr\/products\/back-to-the-fundamentals-rash-guard","provider":"Grapple Guard","version":"1.0","type":"link"}