If the base isn't right, the rest doesn't stand a chance. The same goes for your running outfit. And part of those essentials are baselayers.
The Belgian weather doesn't make it easy: one day it's 15°C and sunny, the next day, temperatures are flirting with freezing. It's time to bring clarity when it comes to choosing what to wear for running or walking. So, here we go.
Baselayers for all your activities
On warmer days, it's no rocket science: a breathable running shirt and shorts are all you need to run comfortably.
On changeable or cold days, a bit more thought is required. The golden rule is the three-layer system: a baselayer, a running shirt on top, and a (water-repellent) jacket or (sleeveless) vest for extra protection against wind or rain.
A comfortable baselayer is half the battle. But what makes a good baselayer, and how do baselayers differ from one another?
The material: synthetic vs. wool
The main difference between baselayers lies in the material. We generally distinguish between polyester and wool. Both have their advantages, but it all depends on the situation. So, when should you choose one over the other?
When to choose for a synthetic baselayer?
The most common synthetic materials used in sportswear are polyester, polyamide, nylon, and elastane. These materials are generally breathable, moisture-wicking, and lightweight.
In warm and dry weather, synthetic fabrics are an excellent choice. They dry relatively quickly and are often more airy. A combination of polyester and polyamide is common: polyester repels sweat instead of absorbing it, while polyamide is highly breathable. Together, these two materials offer the best properties for exercising in warm conditions.
For intensive training sessions, synthetic fibers are preferred. That's partly because they don't retain sweat, and partly because they tend to be tighter and finer - think of lycra. Polyamide is also elastic, providing the necessary freedom of movement during workouts. When elastane is added, you can be sure of a stretchy effect. Plus, your clothing will keep its shape for longer.
If you're looking for a budget-friendly option, synthetic materials are ideal. Sportswear made from synthetics is usually more affordable than wool.
When to choose for a Merino wool baselayer?
Merino wool stands out for its temperature regulation and odor control. It's a natural material that keeps you cool in warm conditions and insulates when it's cold.
For less intensive activities such as hiking or cycling, merino wool is very comfortable. Merino wool is hydrophilic, meaning it will initially wick away sweat but eventually start to retain moisture - whick makes it less ideal for very intense workouts.
In fluctuating temperatures, merino wool helps maintain a stable body temperature. When it's cold, it acts as an insulator: when it gets warmer, it keeps you cool.
During multi-day hikes, you can pack less clothing if you opt for merino wool. Thanks to its odor-controlling properties, you can wear a baselayer for several days without losing that fresh feeling.
The best of both worlds: a combination of synthetic and wool
By combining synthetic materials with merino wool, you get the best of both worlds. This way, you benefit from temperature regulation and odor control, as well as quick-drying and moisture-wicking properties.
The brands: different models highlighted
Craft baselayers: dry, warm or wool?
You find three different types of Craft baselayers in our Runners' lab webshop:
CORE Dry Active Comfort is a versatile baselayer suitable for almost any activity - from running to skiing or mountain trekking. It's made 100% from synthetic materials (polyamide and polyester), offering a soft balance of warmth and moisture management. It can be worn as a bottom layer or on its own when it's not very cold.
Active Intensity is an excellent choice for intensive activities in mild to cold temperatures. It has an athletic fit, wicks sweat effectively, and keeps you coomfortble during workouts. The matieral is a technical blend of polyester, polyamide, and elastane.
ADV Warm Intensity is perfect for cold winter days, even down to -15°C. Strategically placed zones provide extra warmth where you need it most, while still wicking sweat away from the body. It's the ideal choice for activities like alpine skiing or other winter sports.
​Smartwool: the benefits of Merino wool
The Classic All-Season Long Sleeve Crew Merino is Smartwool's most versatile baselayer. You can wear it year-round in changeable weather, and it's suitable for almost any moderate-intensity activity, such as hiking or cycling.
The Classic Thermal Merino Baselayer is designed for cold temperatures. It provides extra warmth while remaining breathable and is also suitable for nearly all moderate-intensity activities. Itt's available with or without a half-zip. The half-zip option offers the added benefit of extra ventilation when it gets too warm.
Back to Basics - It all starts with a good base
The base is made up of more than just your baselayer. Think of your sports underwear (boxers and slips), sports bra, and socks. What the right choice is, we explain in our other blogs.
If the base isn't right, the rest doesn't stand a chance. The same goes for your running outfit. And part of those essentials are baselayers.
The Belgian weather doesn't make it easy: one day it's 15°C and sunny, the next day, temperatures are flirting with freezing. It's time to bring clarity when it comes to choosing what to wear for running or walking. So, here we go.
Baselayers for all your activities
On warmer days, it's no rocket science: a breathable running shirt and shorts are all you need to run comfortably.
On changeable or cold days, a bit more thought is required. The golden rule is the three-layer system: a baselayer, a running shirt on top, and a (water-repellent) jacket or (sleeveless) vest for extra protection against wind or rain.
A comfortable baselayer is half the battle. But what makes a good baselayer, and how do baselayers differ from one another?
The material: synthetic vs. wool
The main difference between baselayers lies in the material. We generally distinguish between polyester and wool. Both have their advantages, but it all depends on the situation. So, when should you choose one over the other?
When to choose for a synthetic baselayer?
The most common synthetic materials used in sportswear are polyester, polyamide, nylon, and elastane. These materials are generally breathable, moisture-wicking, and lightweight.
In warm and dry weather, synthetic fabrics are an excellent choice. They dry relatively quickly and are often more airy. A combination of polyester and polyamide is common: polyester repels sweat instead of absorbing it, while polyamide is highly breathable. Together, these two materials offer the best properties for exercising in warm conditions.
For intensive training sessions, synthetic fibers are preferred. That's partly because they don't retain sweat, and partly because they tend to be tighter and finer - think of lycra. Polyamide is also elastic, providing the necessary freedom of movement during workouts. When elastane is added, you can be sure of a stretchy effect. Plus, your clothing will keep its shape for longer.
If you're looking for a budget-friendly option, synthetic materials are ideal. Sportswear made from synthetics is usually more affordable than wool.
When to choose for a Merino wool baselayer?
Merino wool stands out for its temperature regulation and odor control. It's a natural material that keeps you cool in warm conditions and insulates when it's cold.
For less intensive activities such as hiking or cycling, merino wool is very comfortable. Merino wool is hydrophilic, meaning it will initially wick away sweat but eventually start to retain moisture - whick makes it less ideal for very intense workouts.
In fluctuating temperatures, merino wool helps maintain a stable body temperature. When it's cold, it acts as an insulator: when it gets warmer, it keeps you cool.
During multi-day hikes, you can pack less clothing if you opt for merino wool. Thanks to its odor-controlling properties, you can wear a baselayer for several days without losing that fresh feeling.
The best of both worlds: a combination of synthetic and wool
By combining synthetic materials with merino wool, you get the best of both worlds. This way, you benefit from temperature regulation and odor control, as well as quick-drying and moisture-wicking properties.
The brands: different models highlighted
Craft baselayers: dry, warm or wool?
You find three different types of Craft baselayers in our Runners' lab webshop:
CORE Dry Active Comfort is a versatile baselayer suitable for almost any activity - from running to skiing or mountain trekking. It's made 100% from synthetic materials (polyamide and polyester), offering a soft balance of warmth and moisture management. It can be worn as a bottom layer or on its own when it's not very cold.
Active Intensity is an excellent choice for intensive activities in mild to cold temperatures. It has an athletic fit, wicks sweat effectively, and keeps you coomfortble during workouts. The matieral is a technical blend of polyester, polyamide, and elastane.
ADV Warm Intensity is perfect for cold winter days, even down to -15°C. Strategically placed zones provide extra warmth where you need it most, while still wicking sweat away from the body. It's the ideal choice for activities like alpine skiing or other winter sports.
​Smartwool: the benefits of Merino wool
The Classic All-Season Long Sleeve Crew Merino is Smartwool's most versatile baselayer. You can wear it year-round in changeable weather, and it's suitable for almost any moderate-intensity activity, such as hiking or cycling.
The Classic Thermal Merino Baselayer is designed for cold temperatures. It provides extra warmth while remaining breathable and is also suitable for nearly all moderate-intensity activities. Itt's available with or without a half-zip. The half-zip option offers the added benefit of extra ventilation when it gets too warm.
Back to Basics - It all starts with a good base
The base is made up of more than just your baselayer. Think of your sports underwear (boxers and slips), sports bra, and socks. What the right choice is, we explain in our other blogs.