Thermal layers are designed to protect the body from cold weather, and they typically consist of a base layer and a middle layer.
A thermal layer is a clothing item designed to help keep your body warm in cold weather. A base layer provides insulation for heat loss, while the middle layer traps air between the fibers and creates an insulating material that helps trap heat.

Differences Between Base Layer and Thermal Layer
Base layers are clothes that we wear under our outer clothing. They are made of thin materials such as polyester and cotton. In addition, we wear thermal layers over the base layer in cold weather to keep us warm.
Base layer clothing is the most common type of clothing we wear when we go outside. It is usually made from thin fabric and has no functional layers except for an inner layer of thermal properties. On the other hand, thermal layer clothing has the function of keeping your body temperature regulated.
Base layers are typically made from lightweight fabric and have no insulating properties. As a result, these materials can only keep you warm in a specific range of temperatures, and they’re usually seen as summer exercise gear.
Thermal clothes have a lot more insulation – they can keep you warm down to around freezing temperature or colder, depending on what type you’re wearing!
Again, let me explain: Base layer clothing is often made of thinner materials and is meant to be worn under other layers. Thermal layer clothing traps heat and can be worn on base layer clothing.
Base Layer vs. Thermal Layer Clothing
The base layer clothing system consists of a skinny and light shirt, light or no-bra shirt, and a long-sleeved shirt that helps regulate body temperature. This system offers the most protection and leaves the body vulnerable to hypothermia in colder conditions.
Base Layer vs. Winter Clothing Layers
A winter layering system includes heavy-duty outerwear, an insulating mid-layer (either down or synthetic), a lightweight hat, gloves, socks, boots, and possibly insulated underwear.
Reasons to Choose a Base Layer over a Thermal Layer
A base layer is lightweight, breathable, and comfortable. It provides a thin layer of insulation that keeps you warm in the winter and cool in the summer. Thermal coatings are heavier, offer less breathability, and are not as comfortable as a base layer.
If you will wear multiple layers of clothing each day, it is best to choose a base layer over a thermal one. They also offer more versatility than thermal layers worn under or over other clothing.
Base layers are incredibly versatile to wear for all types of activities, such as walking or playing sports during the winter or cooling down after a hot run during the summer months. Thermal layers lack this versatility because they have limited function, and they do not work well with other types of clothes which is why many prefer wearing base layers instead.
Base layers are designed to provide warmth and protection from the cold because they are thicker, have more insulation, and provide a higher comfort level than thermal layers.
The benefits of choosing base layers over thermal layers include:
- Increased comfort and increased mobility due to less bulk and weight.
- Easy to use with other layering systems.
- Better breathability than most thermals, making them suitable for multi-day trips in hot weather.
A base layer is warmer and better insulated than a thermal layer. This makes it the best choice when you need to retain your body heat while sleeping.
Base Layer – a type of garment designed to be worn under other clothing to provide warmth without adding bulk or weight
Thermal Layer – a thin, lightweight winter garment that helps keep the body warm on the coldest days

6 Things You Should Know Before Choosing A Base or Thermal Layers
The best base layers will wick moisture away from the body while providing warmth. They should be made of a soft and lightweight material.
It’s common to hear the debate between base layers and top layers. Some people feel that a base layer is unnecessary and prefer to wear a thermal garment instead. Others maintain that it’s better to wear a base layer in cold weather.
1. Layers are the “new normal.”
2. Layers keep you warm
3. Layers protect you from wind and cold, but their effectiveness depends on the temperature
4. Layers are an investment
5. It all boils down to how cold it is outside
6. If the temperature dips below freezing, hikers should wear base layers
I have a friend who is a skier, and they would always wear their thermal base layers. They love the feeling of the base layer that’s made out of fabric, and it provides them with enough warmth.
While some people prefer to wear their base layers underclothes, others prefer to wear them on top like my friend. There are pros and cons to both options. If you are an active person and need a lot of ventilation, you should put your base layer under your clothes as it will breathe better than an outer layer.
However, if you plan to stay in one place for long periods, then wearing your base layer on top is optimal as it will trap heat more effectively than wearing it underneath clothes.
The 5 Things You Need to Consider When Buying Thermal or Base Layers
When choosing which base layer to buy, you should be looking for a few things.
Winter hiking is an activity that can get you out of the city and into some fresh air, but it can also be dangerous if you’re without proper gear. If you’re not prepared with enough clothing, you could end up hypothermic or end up dangerously chilled. When buying winter hiking gear, consider the following factors:
- The level of comfort
- Durability
- Mobility
- Weight distribution
- The material the garment is made up of
Using these factors will give you something to keep in mind when shopping for base or thermal layers. Remember to keep a budget in mind and try on the clothing. Brands may differ between each other, and some may fit you better than others. Don’t be afraid to return clothing you don’t think fits correctly; it’s essential to wear proper fitting gear.