Bont Skate Sizing: How to Measure Your Feet and Read the Chart

Written for OurSkates. Reviewed and verified by Vincent Henry, 50x British National Champion and FISS Level 3 coach. Last updated July 2026.

The most common mistake people make when ordering Bont boots is ordering their shoe size. Bont sizing has no relationship to UK shoe sizing, and the reason is worth understanding, because it explains why the boots fit the way they do.

A speed boot is not built like a trainer. Trainers are built long and loose on a generic last, with room for your foot to move. A race boot is built to hold your foot completely still, because any movement inside the boot is wasted power on every stride. Bont has built its boots on the same last shapes since 1975. Trainer lasts, meanwhile, have shrunk over the decades as manufacturing moved, which is why the same person might wear a size 10 trainer and a size 8 Bont. Ignore the number on your shoes. Measure your feet.

Before you measure

Put on the socks you will actually skate in. Thin race socks and thick winter socks produce different measurements, and millimetres matter here. Stand with your weight spread evenly across both feet, because a loaded foot is longer and wider than an unloaded one. And measure both feet. Almost nobody has two identical feet, and you will size to the larger one.

Measuring in three steps

Tape a sheet of paper to a hard floor near a wall. Stand on the paper with your heel just touching the wall, or slightly away from it. Do not press your heel into the wall, as that shortens the measurement and is the most common source of error.

Mark the tip of your longest toe and the widest point of your foot, holding the pen vertically rather than angled under your foot. If your heel sits away from the wall, trace the whole foot instead. Repeat on the other foot.

Measure heel to toe in millimetres with a ruler, and measure the width. These two numbers, length and width, are what the chart works from.

Before you use the chart, check your model

The chart below covers boots such as the Jet and Semi Race III. It does not apply to the Eclipse, Slipstream or the current Vaypor. Those models use direct millimetre sizing, so take your foot length in mm and choose that size on the product page.

Reading the chart

Find the row matching your foot length, then check that your width falls inside the standard fit column. If your width lands in the wide, double wide or narrow columns, those fittings exist, but they are made to order as semi custom boots with a 6 to 8 week lead time. If your two feet land in different rows, size to the larger foot. If you sit right on a boundary between sizes, or your width falls outside every column, stop and contact us with a drawing of both feet showing length and width, and we will confirm the size before you order.

Buying for a growing child

Do not simply size up. An oversized speed boot lets the ankle move, which causes blisters and risks injury. The right approach is the correct size for the foot today with a few millimetres added for growth, which keeps the ankle held while leaving room to grow into. Ask us about the room for growth option when ordering.

Size Chart

---

Measured up and still unsure? Send us your measurements or a foot drawing through the contact page and we will confirm your size before you commit. Then browse inline speed skating boots, or read Getting a Good Bont Boot Fit. A boot in the right size is the cheapest performance upgrade in skating.