Size chart & sizing guide Rio Roller Mayhem II Quad Roller Skates

Measure your foot length (Mondopoint) to find the corresponding size. The displayed Mondopoint values are measured in-house and may differ from the official size chart from the manufacturer. We recommend using our measurements to find the right size.

Conversion chart - Find your size

Foot length	Mondopoint	UK	US Men	EU size
9.3"	235 mm	4	5	37
9.4"	238 mm	5	6	38
10.0"	255 mm	6	7	39.5
10.3"	261 mm	7	8	40.5
10.5"	267 mm	8	9	42
10.8"	274 mm	9	10	43
11.1"	281 mm	10	11	44.5
11.3"	288 mm	11	12	46
11.6"	295 mm	12	13	47
12.0"	305 mm	13	14	48

Notice: This brand does not use the same sizing guide for all products. Please check the sizing guide we show on each product.

How to Measure

Follow the instructions below and compare your measurements with the size chart

Foot length

Place your foot against a wall and measure the distance from the wall to the tip of your toes.

Manufacturers do not always use the same sizes for shoes. Therefore, we recommend using the foot length to find the correct size. The international standard for foot length is known as Mondopoint and indicates the size of the foot in millimeters (mm).

Tip! Use a soft measuring tape, to ensure that the product fits properly. Alternatively, use a piece of string and then measure it against a ruler