20% off

Strengthen t-shirt blue

€19,99 €24,99

Altijd squat- en sweatproof

Zachte en flexibele stof

Zelfverzekerd in de sportschool

Mate

XS S M L

Product variants

Jade Anna, Marijn Kuipers en 7K+ andere meiden dragen Strengthen

Free shipping from €75

Easy returns

Rated 9.4 by our customers

The blue version of the sports shirts from the running collection

Size & Fit

Fit: Are you in doubt between two sizes? No problem! This fabric is ideal, because the fit adapts effortlessly to your body. Comfortable, flexible and always flattering. We recommend that you choose the smallest size.

Material

Composition of material:

Nylon 90%
Spandex 10%

Washing instructions

Washing instructions for sportswear:

Wash cold at a maximum temperature of 30°C.
Turn garment inside out before washing.
Wash together with similar colours.
Do not use fabric softener to protect the elastane fibers.
Avoid bleaching agents.

Care instructions:

Avoid pulling or stretching when the garment is wet.
Do not tumble dry to prevent damage to elastane fibers.
Allow the garment to air dry.
Iron cool if necessary, with the garment inside out.
Steaming is not recommended.
Any creases visible upon receipt will disappear automatically after washing.

Dispatch

Free shipping above 75 euros in the Netherlands & 100 euros in Belgium

Returns can be made within 14 days. For more information click here

View details

Strengthen t-shirt blue

XS – Change

Collection list

Our Story

When we, Isa (18) and Danine (20), wanted to combine our passion for fitness with our dream to create something special, Strengthen was born. What started as a spontaneous idea during our own workouts, grew into a brand with a clear mission: letting you work out in outfits that make you feel strong, stylish and confident.

We believe that sportswear is more than just functional – it’s an extension of your strength and personality. That’s why we design with love and care, so that each collection perfectly matches your needs and style. Whether you’re doing a tough workout or just having a comfortable day, we want you to feel your best in our clothes.

At Strengthen, everything revolves around you. From the first design to the moment your package is delivered, we make you feel special. Together we make your sports moments even more beautiful and powerful.

Strengthen t-shirt blue

Collection list

Fantastisch!

Uitstekend materiaal, squat proof! Sport BHs zitten lekker + de pads bieden extra versteviging. Maten zijn duidelijk aangeven welke groter/kleiner vallen, dus op advies gekocht en past perfect.Levering ook goed, direct een mailbevestiging gekregen en binnen een paar dagen bezorgd.

Echt een aanrader

Our Story

At Strengthen, everything revolves around you. From the first design to the moment your package is delivered, we make you feel special. Together we make your sports moments even more beautiful and powerful.

Love, Isa & Danine

Strengthen t-shirt blue

Previous Collection list Next

Fantastisch!

Uitstekend materiaal, squat proof! Sport BHs zitten lekker + de pads bieden extra versteviging. Maten zijn duidelijk aangeven welke groter/kleiner vallen, dus op advies gekocht en past perfect.Levering ook goed, direct een mailbevestiging gekregen en binnen een paar dagen bezorgd.

Echt een aanrader

Our Story

At Strengthen, everything revolves around you. From the first design to the moment your package is delivered, we make you feel special. Together we make your sports moments even more beautiful and powerful.

Love, Isa & Danine

Collection list