NOTE: Lease refer to our size chart before making a purchase. If there are any quality questions with the shoes after received please contact us. ( Please use protective gear and read the instruction manual before skating ). Occations: Suitable for a various of outdoor activity, including Christmas、Halloween、New Year、Thanksgiving、dance 、party、back to school、birthday gifts for kids. Saftly and Comfort : Easy to roller, specially designed for beginners. Designed with kids comfort and safety in mind, these shoes offer good grip, easy control, and cushioning. Making it easy for children who love pulleys to learn and enjoy the experience from the beginning, making their childhood more interesting. Detachable Wheels: Remove the first wheel and turn the shoe into a single wheel shoe. You can also hide the rear wheel and press the button on the heel to turn them into regular shoes. In roller skating mode, the two wheels give a feeling of inline skate shoes. Accessories: 1 pair of shoes, 2 black covers, 2 wheels, 1 tool, 1 pair of socks, 1 instruction manual. A Series pulley wheel: roller shoes shoes with wheels for kids roller shoes for boys pop out roller skate shoes roller shoes for kids rollerskate shoes wheelies shoes for boys shoe skates  Features: Convenient adjustable Lace-up Waterproof/ventilation leather upper & Non slip rubber outsole Removable Double wheel shoes/Single wheel shoes/Ordinary casual shoes Occations: Suitable for a various of outdoor activity, including Christmas、Halloween、New Year、Thanksgiving、dance 、party、back to school、birthday gifts for kids.  Roller Shoes Size Chart: Little Kid 11.5 M--- Label size 28 --- inner length 178mm/7 inches Little Kid 12 M--- Label size 29 --- inner length 185mm/7.28 inches Little Kid 12.5 M--- Label size 30 --- inner length 193mm/7.59 inches Little Kid 13 M--- Label size 31 --- inner length 198mm/7.79 inches Little Kid 1 M--- Label size 32--- inner length 205mm/8.07 inches Little Kid 1.5 M--- Label size 33 --- inner length 212mm/8.34 inches Little Kid 3 M--- Label size 34 --- inner length 218mm/8.58 inches Big Kid 3.5 M--- Label size 35 --- inner length 225mm/8.85 inches Big Kid 4 M--- Label size 36 --- inner length 230mm/9.05 inches Big Kid 4.5 M--- Label size 37 --- inner length 235mm/9.25 inches Big Kid 5.5 M--- Label size 38 --- inner length 240mm/9.44 inches Big Kid 6 M--- Label size 39 --- inner length 245mm/9.64 inches Big Kid 6.5 M--- Label size 40 --- inner length 250mm/9.84 inches Inner length=feet length+(0.2~0.39in) 1 inch=25.4mm