The USD Aeon Basic 60 Aggressive Inline Skate XXI is the perfect example how to make the best aggressive skate even better. By simply listening to skaters and improving the parts that matter. We've added a new thicker shock absorber and a new higher cuff that is also height adjustable. It's an improved shape that provides more support and comfort right out of the box. The new 61mm USD wheels come with an improved core and round profile making the wheels fast and grippy. The most direct grinding experience is supported by a simple yet effective basic liner that offers all you need in fit, comfort and performance. Product Description USD Aeon Basic 60 XXIThe modern classic of aggressive street skating. USD took it right back to the drawing board with the design of this skate, shattering all expectations and dismissing the UFS frame system, completely reworking our understanding of an aggressive skate and bringing the design back to basics. The unibody concept defines this unique design, creating the lowest, lightest skate possible with unparalleled energy transfer in every stride. One step back, two steps forward. With a single piece construction the weight is drastically reduced whilst the strength of the boot is immensely increased, you'll never snap a frame again! The unibody concept allows for the widest H-block split possible, making this the best flat set up skate ever created, keeping you safe from wheel bite on all h-block tricks whilst still riding a full flat set up of fast and long lasting USD 61mm wheels. The skate is completed with the USD Basic dual fit liners. The stretchy neoprene toes allow for 2 sizes to be catered to with a single liner, giving perfect comfort and support in every session. Highlight 1 Unibody construction, lightweight, perfectly balanced and low to the ground; soulplate and body made out of glass-fiber reinforced plastic (GFRP) - GFK Highlight 2 The best available flat setup with a perfect balance of space, groove shape and material Highlight 3 USD Basic dual liner with top lacing and perfect fit and function Boot Type hardboot Shell/Outsole Sizes EU 36/37/38, 39/40, 41/42, 43/44, 45/46 Shell / Outsole Material glass-fiber reinforced plastic (GFRP) - GFK 45° Closure / Front Foot Closure velcro strap / standard lacing Liner USD Basic dual fit liner Innersole MYFIT EVA skatesole Frame Name Unibody Frame Mounting Standard Unibody Frame Material Glass-Fiber reinforced plastic (GFRP) - GFK Frame Manufacturing Process Unibody injected Frame Wheel Base (Inch / MM) 36/37/38 9,7" (246mm) / 39-42 = 10,1" (256mm) / 43-46 = 10,6" (269mm) Max. Wheel Size 61mm Frame Axles Double axle steel 8mm, hex 4mm Wheel Name USD Team Basic Wheel Diameter 61mm Wheel Hardness 90A Wheel Compound SHR= Super High Rebound, X-Treme Pro Wheel Setup 4x61mm Bearing Brand WCD Wicked Bearing Rating ABEC 7 Bearing Material carbon pro steel Bearing Shield RZ, Single sided rubber coated steel shield Bearing Lubrication Light Grease Included Accesssories Tool - hex 4mm Weight 1540g (size 41/42) Size Measurement To find the correct fitting skate follow the below directions to find your CM foot measurement. Once you have determined your CM foot measurement of your larger foot compare it to the sizing chart to select your perfect skate size. A perfect fitting skate should be a snug fit without being uncomfortable and squashed. If you have any additional sizing questions please feel free to contact us. Place a blank piece of paper on the floor flush with the bottom edge of a wall. Stand up straight against the wall on the paper with your heel firmly against the wall. Have a friend trace around your toes onto the paper with a pencil. This will give you your heel to toe foot length. Repeat for your other foot. Use a ruler to measure the heel to toe length for both feet. Use the longer of the two measurements to compare with the sizing chart.