The perfect choice for moderate to ultra distance runs, the Spin Ultra offers more cushioning than the Spin 2.0, in a stable package featuring ample upper protection to keep your feet feeling good in all types of terrain. FEATURES Micro-nubuck and mesh upper for breathable durability Sock-Fit LW construction reduces bulk and enhances fit TPU toe cap offers outstanding trail protection 6mm drop midsole with TPU insert for cushion and protection Vibram Megagrip outsole features outstanding traction Sock-Fit LW: Stretch fabric incorporated with a minimal stretch tongue provides gentle wrapping and support, reducing bulk and enhancing fit. Hidden Lace Pocket: Low profile stretch pocket for stowing laces after tying. Upper: In mesh with applications in heat-sealed TPU film, integrated with a shockresistant 3D TPU toe cap. Tongue in lightweight and breathable fabric with pocket for laces. The upper wraps the foot like a sock thanks to the Sock-Fit LW construction system, avoiding pressure points and ensuring maximum comfort and precision fit. Lacing: The lace loops are integrated with the upper structure to wrap the foot without pressure points Sole: Velox LB Max. Low density EVA forefoot insert, with differentiated thickness for maximum cushioning. ESS forefoot insert, for maximum propulsion and Shock-Absorbing. Medium density EVA midsole for stability and cushioning. Outsole VIBRAM® exclusive design by SCARPA MEGAGRIP rubber compound for high grip on every terrain. Specifications Size Options : 36 - 42 (half sizes) Weight Reference : 225g; 7.9oz (1/2 pair size 38) Upper : Mesh & PU Film & Micro Nubuck Lining : Recycled Polyester Midsole : 2D EVA-CM Outsole : Vibram® Velox LB Max / Megagrip Insole : TPU Insert Drop : 6mm Cushion : High Underfoot Protection : Moderate Scarpa Sizing Chart   European Size US Men's Size US Women's Size UK Size 38 5.5 - 6 7 5 39 6.5 7.5 5.5 40 7.5 8.5 6.5 41 8 9 7 42 9 10 8 43 9.5 - 10 10.5 - 11 8.5 - 9 44 10.5 11.5 9.5 45 11 12 10 46 12 11 47 13 12  All Scarpa non-plastic footwear uses European sizing  1 Euro whole size = 6.6 mm 1 US whole size = 8.4 mm The Euro sizes above cover the same size range as US sizes  Scarpa Boots and Shoe Size Fitting Advice For trail / mountain / approach / lifestyle products: The bigger/heavier/more supportive the product, the more you may want to upsize by .5 - 1 full size. Lighter, softer, more supple shoes can be sized closer to your measured size. Note: SCARPA Plastic mountain boots all use UK sizing; UK converts easily: 1 full size smaller than US men's size, 2 sizes smaller than US women's size. Try on with appropriate socks for your usage. The bigger the boot, the more appropriate a bigger sock. If you use orthotics or already have aftermarket footbeds, measure against the standard footbed in boot. Fit into boot for sizing/fitting the boot. Best to try on at the end of the day when your feet are larger/swollen, than when your feet are fresh to ensure good fit after a long day. Lacing can play an incredibly important part of a good fit. Be sure to play with lacing when analyzing fit. Make sure your heel isn't slipping. Make sure your toes aren't hitting the end. Approach shoes may be sized smaller for performance purposes but beware... small shoes are really uncomfortable on the trail. Scarpa Spin Ultra Women's Trail Running Shoe