Spokey Khan BK/WH black-gray-white 927032-927033 Spokey roller skates will work both during dynamic, and recreational skating. Size adjustment helps in achieving a precise fit. You should use the button located under the heel and hold the front of the shoe and spread the appropriate distance up to audible click. Shoe made of durable plastics. Ergonomic frame with 3-step closure. Anatomical insole. Roller runner of aluminum alloy. In the model used two wheels arrangement, which you can arrange in 2x4 or 2x3 configuration. Smaller wheels are light, more manoeuvrable and they make it easier to balance the body, and larger wheels roll much longer when you push back, therefore allow you to ride faster. Due to the possibility of replacing the wheels    Technical data:· type: adjustable· wheels: PU, hardness 82A· bearings : ABEC-7 Carbon clasp: lace, buckle, velcro material runners: aluminum middot; max. user weight: 60 kg · model no includes skating blades size: 31-34 (length inserts: 20-22 cm, size knuckle 8x76 mm, 6x100 mm) size: 35- 38 (length inserts: 20-24 cm, size knuckle 8x84 mm, 6x100 mm) size: 39-42 (length inserts: 24-26 cm, size circle 8x90 mm, 6x100 mm)