Frequently Asked Question

Frequently Asked Question

From start to finish, Underun was made to keep runners comfortable during one of the biggest endurance tests for underwear: running 40km. The materials we use, the strategically placed ventilation zones, the height of the waistband – everything is made to prevent irritation and help athletes perform!
No! Football, tennis and basketball players are also fans of Underun. Underun keeps athletes dry, free of irritation and cool while running a marathon. If it can handle moving and sweating constantly for 40km, you know it can handle everything!
* We do not recommend Underun for recreational and professional cyclists because they often require extra padding and differently placed seams.
Underun is made with 360° seamless technology and is seamless all around. So, no annoying seams at the front, back or sides that can dig into the skin and irritate.
Like other seamless products, the only seams that Underun has can be found in the leg openings and in the crotch area where the front and back material is attached together.
Polyamide! Unlike cotton, polyamide removes moisture away from your body and transfers it to the outside of the underwear where it can evaporate quickly. So no chemical treatments that lose their effectiveness after washing. Therefore, Underun always feels dry. However often you wear it and however often you wash it.
Polyamide and elastane. Polyamide ensures that Underun is moisture-wicking and fast-drying, while elastane ensures a perfect fit.
Any type of underwear has its function. Underun is made to make athletes comfortable during running and other activities. Underwear for daily wear, often made of cotton, is made to be comfortable during your daily activities, but as soon as you begin to move and sweat this changes very quickly. Cotton absorbs moisture and holds it so that it feels heavy and loses its fit. In addition, retaining moisture can cause irritation, abrasion and even infections. Therefore, for exercising and sport, Underun!
Simple! Inside out, on cold and with similar materials. Underun is fast-drying so drying in the dryer is not necessary. After washing you can hang Underun and within a few hours it’s dry and ready for your workout!
Polyamide is a fabric that retains its shape extremely well. Through the use of polyamide and elastane, Underun will retain its fit perfectly with normal use!
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Men Size


Step 1:
Measure yourself

Step 2: Find your Underun size

Use your sizes and the size chart below to find the right Underun size. If your waist and waist sizes fall under two different Underun sizes, select the Underun size that corresponds to your hip size.

  Waist Hip
Size Inch Cm Inch Cm
S 29-32  73-81 35-37.5 88-96
M 32-35  81-89 37.5-41 96-104
L 35-38  89-97 41-44 104-112
×
Men Size


Step 1:
Measure yourself

Step 2: Find your Underun size

Use your sizes and the size chart below to find the right Underun size. If your waist and waist sizes fall under two different Underun sizes, select the Underun size that corresponds to your hip size.

  Waist Hip
Size Inch Cm Inch Cm
S 29-32  73-81 35-37.5 88-96
M 32-35  81-89 37.5-41 96-104
L 35-38  89-97 41-44 104-112
×
Women Size


Step 1:
Measure yourself

Step 2: Find your Underun size

Use your sizes and the size chart below to find the right Underun size. If your waist and waist sizes fall under two different Underun sizes, select the Underun size that corresponds to your hip size.

  Waist Hip
Size Inch Cm Inch Cm
S 26-29  67-74 35-38.5 91-98
M 29-31.5  74-81 38.5-41 98-105
L 31.5-34.5  81-88 41-44 105-112
×
Women Size


Step 1:
Measure yourself

Step 2: Find your Underun size

Use your sizes and the size chart below to find the right Underun size. If your waist and waist sizes fall under two different Underun sizes, select the Underun size that corresponds to your hip size.

  Waist Hip
Size Inch Cm Inch Cm
S 26-29  67-74 35-38.5 91-98
M 29-31.5  74-81 38.5-41 98-105
L 31.5-34.5  81-88 41-44 105-112
×
Men Size


Step 1:
Measure yourself

Step 2: Find your Underun size

Use your sizes and the size chart below to find the right Underun size. If your waist and waist sizes fall under two different Underun sizes, select the Underun size that corresponds to your hip size.

  Waist Hip
Size Inch Cm Inch Cm
S 29-32  73-81 35-37.5 88-96
M 32-35  81-89 37.5-41 96-104
L 35-38  89-97 41-44 104-112
×