{"product_id":"castiron-grip-n23-climbing-shoe","title":"Castiron Grip N23 — Precision Edge Climbing Shoe","description":"\u003ch2\u003eCastiron Grip N23 — Precision Edge Climbing Shoe\u003c\/h2\u003e\u003cp\u003eAggressive downturn. Dual strap. High-friction rubber. The \u003cstrong\u003eN23\u003c\/strong\u003e was built for climbers who need their shoe to do exactly what they tell it — nothing more, nothing less. Precision edging on vertical faces. Secure lockdown on overhangs. This is a \u003ca href=\"\/en-it\/collections\/castiron-grip\"\u003eperformance climbing shoe\u003c\/a\u003e that reads the wall before you commit. One standard. Every send.\u003c\/p\u003e\u003cp\u003eThe N23 doesn't negotiate with the wall — it reads it. The moderate-aggressive downturn positions your toe precisely on small edges and pockets without the discomfort of a full competition shoe. The dual velcro closure locks your foot in place between problems. The high-friction rubber compound holds on slab, vertical, and overhang alike. Built for V3–V7 bouldering and 5.10–5.12 sport climbing. \u003cem\u003eFormerly Rock Planet N23 — same production, same performance. Castiron standard.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStyle:\u003c\/strong\u003e Precision edge climbing shoe\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClosure:\u003c\/strong\u003e Dual velcro strap — fast, secure, adjustable between problems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSole:\u003c\/strong\u003e High-friction rubber — precision edging and heel hooking\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eToe Box:\u003c\/strong\u003e Moderate-aggressive downturn — more than beginner, less than competition\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUpper:\u003c\/strong\u003e Synthetic microfiber — Pink \/ Grey \/ Yellow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColors:\u003c\/strong\u003e Pink · Red\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSizes:\u003c\/strong\u003e EU 35–44 | US Women 5–13W | US Men 3–11M | UK 2.5–9.5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBest For:\u003c\/strong\u003e Indoor bouldering, overhang climbing, precision edging, intermediate to advanced climbers\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSize Guide\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eEU\u003c\/th\u003e\n\u003cth\u003eUS Women\u003c\/th\u003e\n\u003cth\u003eUS Men\u003c\/th\u003e\n\u003cth\u003eUK\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eEU 35\u003c\/td\u003e\n\u003ctd\u003eUS 5W\u003c\/td\u003e\n\u003ctd\u003eUS 3M\u003c\/td\u003e\n\u003ctd\u003eUK 2.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEU 36\u003c\/td\u003e\n\u003ctd\u003eUS 6W\u003c\/td\u003e\n\u003ctd\u003eUS 4M\u003c\/td\u003e\n\u003ctd\u003eUK 3.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEU 37\u003c\/td\u003e\n\u003ctd\u003eUS 6.5W\u003c\/td\u003e\n\u003ctd\u003eUS 4.5M\u003c\/td\u003e\n\u003ctd\u003eUK 4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEU 38\u003c\/td\u003e\n\u003ctd\u003eUS 7.5W\u003c\/td\u003e\n\u003ctd\u003eUS 5.5M\u003c\/td\u003e\n\u003ctd\u003eUK 5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEU 39\u003c\/td\u003e\n\u003ctd\u003eUS 8.5W\u003c\/td\u003e\n\u003ctd\u003eUS 6.5M\u003c\/td\u003e\n\u003ctd\u003eUK 6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEU 40\u003c\/td\u003e\n\u003ctd\u003eUS 9W\u003c\/td\u003e\n\u003ctd\u003eUS 7M\u003c\/td\u003e\n\u003ctd\u003eUK 6.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEU 41\u003c\/td\u003e\n\u003ctd\u003eUS 10W\u003c\/td\u003e\n\u003ctd\u003eUS 8M\u003c\/td\u003e\n\u003ctd\u003eUK 7.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEU 42\u003c\/td\u003e\n\u003ctd\u003eUS 11W\u003c\/td\u003e\n\u003ctd\u003eUS 9M\u003c\/td\u003e\n\u003ctd\u003eUK 8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEU 43\u003c\/td\u003e\n\u003ctd\u003eUS 12W\u003c\/td\u003e\n\u003ctd\u003eUS 10M\u003c\/td\u003e\n\u003ctd\u003eUK 9\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEU 44\u003c\/td\u003e\n\u003ctd\u003eUS 13W\u003c\/td\u003e\n\u003ctd\u003eUS 11M\u003c\/td\u003e\n\u003ctd\u003eUK 9.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003e\u003cem\u003eRuns small due to aggressive downturn. Size up 0.5–1 EU from your normal size. Women size up 1.5 from men's US sizing.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eWhy the N23?\u003c\/h3\u003e\u003cp\u003eThe N23 sits in the sweet spot between beginner comfort and competition aggression. Enough downturn to perform on overhangs and pockets. Enough comfort to wear through a full bouldering session. The dual velcro closure means you're back on the wall in seconds. The high-friction rubber holds where other shoes slip. For climbers pushing into intermediate and advanced grades who need a shoe that keeps pace — this is it. One standard. Every send.\u003c\/p\u003e\u003ch3\u003eBest For\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eIndoor bouldering and overhang climbing\u003c\/li\u003e\n\u003cli\u003ePrecision edging on vertical and technical routes\u003c\/li\u003e\n\u003cli\u003eV3–V7 bouldering and 5.10–5.12 sport climbing\u003c\/li\u003e\n\u003cli\u003eIntermediate climbers stepping up their performance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eAlso in the Castiron Grip Line\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-it\/products\/castiron-grip-pr23-climbing-shoe\"\u003ePR23\u003c\/a\u003e — flagship performance velcro, EU 35–44\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-it\/products\/castiron-grip-swift-climbing-shoe\"\u003eSWIFT\u003c\/a\u003e — all-round lace-up, EU 35–44\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-it\/products\/castiron-grip-alien-beginner-slip-on-climbing-shoe\"\u003eLittle ALIEN\u003c\/a\u003e — beginner slip-on, EU 29–35\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-it\/products\/castiron-grip-one-youth-velcro-climbing-shoe\"\u003eONE\u003c\/a\u003e — youth velcro, EU 28–35\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-it\/products\/castiron-grip-hug-kids-beginner-climbing-shoe\"\u003eHUG\u003c\/a\u003e — kids beginner, EU 25–32\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Castiron Grip","offers":[{"title":"Pink \/ US 5.5 Women\/US 4 Men","offer_id":48968897233146,"sku":"N23-PINK-EU35","price":89.0,"currency_code":"EUR","in_stock":true},{"title":"Pink \/ US 6.5 Women\/US 5 Men","offer_id":48968897265914,"sku":"N23-PINK-EU36","price":89.0,"currency_code":"EUR","in_stock":true},{"title":"Pink \/ US 7.5 Women\/US 6 Men","offer_id":48968897298682,"sku":"N23-PINK-EU37","price":89.0,"currency_code":"EUR","in_stock":true},{"title":"Pink \/ US 8.5 Women\/US 7 Men","offer_id":48968897331450,"sku":"N23-PINK-EU38","price":89.0,"currency_code":"EUR","in_stock":true},{"title":"Pink \/ US 9.5 Women\/US 8 Men","offer_id":48968897364218,"sku":"N23-PINK-EU39","price":89.0,"currency_code":"EUR","in_stock":true},{"title":"Pink \/ US 10.5 Women\/US 9 Men","offer_id":48968897396986,"sku":"N23-PINK-EU40","price":89.0,"currency_code":"EUR","in_stock":true},{"title":"Pink \/ US 11 Women\/US 10 Men","offer_id":48968897429754,"sku":"N23-PINK-EU41","price":89.0,"currency_code":"EUR","in_stock":true},{"title":"Pink \/ US 11.5 Women\/US 11 Men","offer_id":48968897462522,"sku":"N23-PINK-EU42","price":89.0,"currency_code":"EUR","in_stock":true},{"title":"Pink \/ US 12.5 Women\/US 12 Men","offer_id":48968897495290,"sku":"N23-PINK-EU43","price":89.0,"currency_code":"EUR","in_stock":true},{"title":"Pink \/ US 13.5 Women\/US 13 Men","offer_id":48970932420858,"sku":"N23-PINK-EU44","price":89.0,"currency_code":"EUR","in_stock":true},{"title":"Rose Red \/ US 5.5 Women\/US 4 Men","offer_id":48968897528058,"sku":"N23-RED-EU35","price":89.0,"currency_code":"EUR","in_stock":true},{"title":"Rose Red \/ US 6.5 Women\/US 5 Men","offer_id":48968897560826,"sku":"N23-RED-EU36","price":89.0,"currency_code":"EUR","in_stock":true},{"title":"Rose Red \/ US 7.5 Women\/US 6 Men","offer_id":48968897593594,"sku":"N23-RED-EU37","price":89.0,"currency_code":"EUR","in_stock":true},{"title":"Rose Red \/ US 8.5 Women\/US 7 Men","offer_id":48968897626362,"sku":"N23-RED-EU38","price":89.0,"currency_code":"EUR","in_stock":true},{"title":"Rose Red \/ US 9.5 Women\/US 8 Men","offer_id":48968897659130,"sku":"N23-RED-EU39","price":89.0,"currency_code":"EUR","in_stock":true},{"title":"Rose Red \/ US 10.5 Women\/US 9 Men","offer_id":48968897691898,"sku":"N23-RED-EU40","price":89.0,"currency_code":"EUR","in_stock":true},{"title":"Rose Red \/ US 11 Women\/US 10 Men","offer_id":48968897724666,"sku":"N23-RED-EU41","price":89.0,"currency_code":"EUR","in_stock":true},{"title":"Rose Red \/ US 11.5 Women\/US 11 Men","offer_id":48968897757434,"sku":"N23-RED-EU42","price":89.0,"currency_code":"EUR","in_stock":true},{"title":"Rose Red \/ US 12.5 Women\/US 12 Men","offer_id":48968897790202,"sku":"N23-RED-EU43","price":89.0,"currency_code":"EUR","in_stock":true},{"title":"Rose Red \/ US 13.5 Women\/US 13 Men","offer_id":48970932453626,"sku":"N23-RED-EU44","price":89.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/3313\/3562\/files\/Castiron_Grip_N23_precision_edge_climbing_shoe_side_view.jpg?v=1781141771","url":"https:\/\/www.castiron-lift.com\/en-it\/products\/castiron-grip-n23-climbing-shoe","provider":"Castiron Lift","version":"1.0","type":"link"}