Stop Blisters Before They Start

Blisters do not appear out of nowhere. They usually begin with a small amount of rubbing that gets worse over time, especially on longer walks or in footwear that does not fit well.

Your foot moves slightly with every step, even inside a well-fitting boot. That movement is normal, but when there is too much sliding, the skin starts to break down. Add warmth, sweat, or wet conditions, and the skin softens enough to become even more vulnerable.

The main problem is not always the blister itself. It is often the build-up of tiny changes that lead to it, such as a boot that is a touch too loose, a sock that bunches, or lacing that creates pressure in one area. Once you understand that, prevention becomes much easier.

Good fit is the foundation of blister prevention. If your shoes or boots are too tight, too loose, or the wrong shape for your foot, friction will usually develop in the same places again and again.

To check the fit properly, use this simple checklist:

• Toe box space: make sure there is about a thumb’s width between your toes and the front of the shoe.
• Heel lock: your heel should stay snug without slipping.
• Width: there should be no side-of-foot pressure or pinching.
• Sock test: always try footwear on with the socks you plan to wear.

It is also worth testing footwear properly before a long walk. New shoes can feel fine at first, but a short wear-in period helps reveal any pressure points or rubbing before they become a problem on the trail.

Once your boots fit correctly, make sure the laces are tied securely, as this can help keep your feet in place and reduce movement inside the shoe.

Visit any of our stores for a Free Boot Fitting Service with one of our in-store experts, or check out our Boot Fitting Guide for more help with online orders.

Blisters on the bottom of the foot and blisters on the toes are both usually caused by friction, pressure, or movement inside the shoe. The bottom of the foot can be especially painful because it takes so much direct pressure with every step, while toe blisters often happen when footwear is too tight, socks bunch up, or the foot slides forward.

The best way to reduce both is to improve fit, keep feet as dry as possible, and deal with any hot spots early before they develop into full blisters. If a blister does appear, protect the area with a plaster or blister dressing and avoid anything that adds more rubbing.

Socks play a bigger role than many walkers expect. A good walking sock helps manage moisture, reduce rubbing, and create a smoother layer between your foot and the boot.

Avoid cotton socks, as they tend to hold moisture next to the skin and, combined with friction, can cause blisters. Instead, choose a moisture-wicking pair made from polyester or wool, such as Bridgedale or Smartwool. Alternatively, you could try a thin merino wool or polyester liner sock with a thicker sock worn over the top. Whether you wear one pair or two comes down to personal comfort, but it is important to factor in sock thickness when checking the fit of your footwear, as it can change the volume inside the boot. You should also think about the level of insulation your socks provide.

The best socks are those that move moisture away from the skin and stay in place without wrinkling. If a sock bunches under the heel or toes, it can create a pressure point that quickly turns into a hotspot. Replace worn socks before they lose shape, as flattened cushioning and loose elastic can reduce protection and increase the risk of blisters.

Top tip: Wool and synthetic socks do an excellent job of moving sweat away from your feet, but it is always worth packing a spare pair and changing them if your feet get wet.

For more help, read our Sock Buying Guide.

Lacing is one of the easiest parts of a boot to overlook, but it can make a huge difference to blister prevention. If the boot is laced too loosely, the foot can move too much inside it. If it is too tight, pressure can build in specific spots and cause rubbing.

A secure lace pattern should hold the heel in place without crushing the top of the foot. Some walkers find that adjusting the tension across different parts of the boot helps reduce movement around the heel while leaving the forefoot more relaxed.

Downhill walking can be especially hard on the feet because the toes are pushed forward with every step. If the boot is not laced properly, that repeated movement can create hotspots under the toes or on the front of the foot. This is why a small lacing adjustment before a descent can be very useful.

Hot spots are the early warning signs of a blister, usually caused by rubbing, pressure, or movement inside your footwear. If you notice a warm, sore, or irritated patch, it is best to act straight away before it develops into something more painful.

• Stop and check the area as soon as you feel rubbing or discomfort.
• Smooth out any sock wrinkles or adjust the fit if something feels off.
• Tighten or loosen your laces to reduce movement inside the shoe.
• Protect the area with blister tape or a plaster.
• Reduce friction before you continue walking.

New footwear often needs time to settle. Even a good boot can cause problems if it is worn straight out on a long walk without enough break-in time.

Breaking in footwear gives the materials time to soften and adapt to your foot. It also helps you notice any rubbing or pressure points before they become a bigger issue on the trail. That is one reason why short test walks are so valuable.

A boot does not always need a long break-in period, but it should feel trustworthy before a full day out. If the fit still feels awkward after a few shorter walks, the issue may be the shape rather than the break-in time.

A small blister-prevention kit can save a walk if a hotspot starts to form. You do not need a large amount of gear, but a few well-chosen items can make a big difference.

Plasters play an important role in both preventing and treating blisters, especially on long walks, hikes, or when you are breaking in new shoes. Choosing the right type can make a noticeable difference to comfort, protection, and recovery.

Hydrocolloid plasters, such as Compeed and Scholl, are designed specifically for blister care. They contain gel particles that help absorb fluid, reduce pressure, and create a cushioned environment that supports healing while protecting the area from further rubbing.

These blister plasters also stay in place well. They are flexible, waterproof, and designed to move with your foot, which means they can offer reliable protection for longer periods without needing frequent changes. Their smooth, skin-like finish also helps them blend in more naturally and feel less bulky when walking.

Standard blister plasters can provide basic coverage, but they do not usually offer the same level of cushioning, moisture control, or durability as hydrocolloid plasters. For that reason, hydrocolloid options are generally the better choice when blister prevention or treatment is the priority.

Shop Compeed blister plasters.

If you feel a blister developing, the best approach is to act early. The sooner you deal with it, the less likely it is to become painful enough to affect the rest of the walk.

Stop and check the area as soon as you notice rubbing or soreness. If the skin is still intact, cover the hotspot with blister plaster or tape designed to reduce friction. That gives the skin a better chance to recover before it gets worse.

If a blister is already formed, protect it rather than continuing to irritate it. The aim is to reduce pressure and let the skin settle, not to keep walking through increasing pain. For larger or more painful blisters, proper care matters more than trying to push through.

Blister prevention is mostly about paying attention to the small things before they become bigger problems. If your footwear fits well, your socks manage moisture, and you act early when a hotspot appears, you give your feet a much better chance of staying comfortable all day.

The best walking setup is not the one that looks the most technical. It is the one that keeps your feet steady, dry, and protected from the first mile to the last.