Ordering gumboots online can feel like a gamble — and getting the size wrong means a boot that rubs your heel raw or one so loose it pulls off in the mud. Here’s how to get it right the first time.
Measure your foot, not your usual shoe size
Gumboot sizing runs differently to sneakers or dress shoes, mostly because of the moulded rubber or PVC construction and the room needed for a thicker sock. The most reliable method is to measure your foot length in millimetres — stand on a piece of paper, mark your heel and longest toe, and measure the distance. Match that to the mm measurement listed against each size on the product page, rather than relying on your usual UK or US size alone.
UK, EU and US sizing — know which one you’re looking at
Because Boonies ships across different conventions, every size option lists the UK size, the EU equivalent, and often the US size together (for example, “8UK–42EURO–276mm insole”). If a UK 8 has never quite fit you right in other brands, use the mm figure as your tiebreaker — it’s the one measurement that doesn’t change between sizing systems.
Leave room for a proper sock
Gumboots are almost always worn with a thicker work or wool sock, especially through a New Zealand winter. If you’re between two sizes, size up rather than down — a slightly roomier boot with a good sock is far more comfortable over a full day than a snug one, and it’s easier to add an insole for a better fit than to force a boot that’s too tight.
Check the calf fit on tall boots
For tall gumboots (like our Rover Tall or Rosie Tall), it’s not just foot length that matters — calf width matters too. If you’ve had trouble getting tall boots over your calf in the past, look at whether the style offers a slightly wider tall shaft, or consider a mid-height option instead.
Still unsure? Ask before you order
If your foot sits right between two listed sizes, or you’ve had fit issues with gumboots before, get in touch before ordering — a quick message can save a return. It’s always easier to get it right the first time than to exchange a pair after wearing them in the mud for a weekend.