· This is an indicator that the boots are approximately the right size, but it is not on its own enough. Far better to find a store with trained boot fitters who can measure your feet, both when sitting and standing, and then suggest boots of the right shape and size. You should then be able to test the boots on an incline board to see if your feet move when pointing up or downhill. If they do, blisters are likely.

A good fitter should also be able to modify boots to remove pressure points if necessary, and suggest any accessories that may be needed, such as stabilising footbeds. When trying on boots, you should wear the socks you'll be wearing with the boots, as the thickness of the socks can affect the fit. Allow plenty of time and be prepared to try on several pairs. And don't part with your money until you are happy with the fit.

More information on boot fitting can be found at: www.fitsystembyphiloren.com and www.gorp.com/gorp/gear/features/bootfit.com.

Chris Townsend

· We offer a range of boots and shoes in whole and half sizes, from women's 3 to men's 14. When trying on our boots, wear walking socks such as Brasher 2x2s, 3x3s or 4x4s. Stand up with the boots on both feet and unlaced. Push your toes forward until they touch the front of the boot. If you can insert your index finger easily between your heel and the back of the boot, you should have the correct size. Some feet can vary in size, so always try on both boots. If in doubt, choose the larger half size - remember your feet will swell during a day on the hill.

The Brasher Boot Company, www.brasher.co.uk

· Having suffered from a bruised toe after walking downhill in too-small walking boots, I made sure that my new pair were a perfect fit by choosing a pair which were a half size bigger than my usual shoes and by standing on the tilted platform (available in most shops that sell walking boots) simulating a hill. I also went shopping in my local indoor shopping centre while wearing the boots - most outdoor shops don't mind you doing this, but just check with them first.
- Linda Moran

· Being able to slide a finger down the back of a boot before lacing it up is certainly an indicator that the boots are approximately the right size, but on its own it's not enough. Far better to find a store with trained boot fitters who can measure your feet, both when standing and sitting, and then suggest boots of the right shape and size. You should then be able to test the boots on an incline board to see if your feet move in them when pointing up or downhill. If they do, blisters are likely.

A good fitter should also be able to modify boots to remove pressure points if necessary and suggest any accessories that may be needed, such as stabilising footbeds.

When trying boots on you should wear the socks you'll be wearing with the boots as the thickness of socks can affect the fit. Allow plenty of time and be prepared to try on several different pairs. And don't part with your money until you are happy with the fit.

More information on boot fitting can be found at www.fitsystembyphiloren.com or www.gorp.com/gear/features/bootfit.htm.
- Chris Townsend