
Best iXS products in the Functional undershirts category
On this page you'll find a ranking of the best iXS products in this category. To give you a quick overview, we've already ranked the most important information about the products for you.
1. iXS Functional T-shirt TS1 fluo blue 2XL
The SIXS Carbon Underwear Short Sleeve Round Neck T-Shirt is a multi-sport product suitable for all conditions. Unlike the sleeveless model, the sleeves cover the upper arm (armpit), which is prone to heavy sweating, keeping the skin dry. The lightest and most breathable polypropylene fiber available on the market, combined with a genuine carbon yarn that has heat transmission and antistatic properties, protects the body from electrical charge caused by the friction of different synthetic materials (a typical characteristic of sportswear).
Technical details:
- Seamless technology
- Antistatic system
Composition:
77% polypropylene, 15% polyamide, 5% elastane, 3% carbon fiber
Sizes: XS-2XL.

2. iXS Functional T-Shirt TS1 fluo blue
The SIXS Carbon Underwear Short Sleeve Round Neck T-Shirt is a multi-sport product suitable for all conditions. Unlike the sleeveless model, the sleeves wrap around the upper arm (armpit), which is prone to heavy sweating, keeping the skin dry. The lightest and most breathable polypropylene fiber available on the market, combined with a genuine carbon yarn that has heat transmission and antistatic properties, protects the body from electric charge caused by the friction of various synthetic materials (a typical characteristic of sportswear).
Technical details:
- Seamless technology
- Antistatic system
Composition:
77% polypropylene, 15% polyamide, 5% elastane, 3% carbon fiber
Sizes: XS-2XL.

3. iXS Functional T-Shirt TS1 fluo-orange
The SIXS Carbon Underwear Short Sleeve Round Neck T-Shirt is a multi-sport product suitable for all conditions. Unlike the sleeveless model, the sleeves cover the upper arm, which is prone to heavy sweating, keeping the skin dry. The lightest and most breathable polypropylene fiber available on the market, combined with a genuine carbon yarn featuring heat transmission and antistatic properties, protects the body from electrical charge caused by the friction of various synthetic materials, a typical characteristic of sportswear.
Technical details:
- Seamless technology
- Antistatic system
Composition:
77% polypropylene, 15% polyamide, 5% elastane, 3% carbon fiber
Sizes: XS-2XL.

4. iXS Tour functional long sleeve shirt Merino 365
The iXS Tour Functional Long Sleeve Shirt Merino 365 is a high-quality functional shirt specifically designed for use in cooler conditions. Made from 100% merino wool, it offers not only excellent thermal insulation but also outstanding temperature regulation, ensuring a comfortable wearing experience. The shirt is Oeko-Tex® 100 certified, guaranteeing that it is free from harmful substances. Additionally, the production process avoids mulesing, making this shirt an ethically responsible choice. The seamless construction and ergonomic fit minimize creasing and maximize comfort, making it ideal for athletic activities or as underwear. This long sleeve shirt is available in various sizes and is suitable for both women and men.
- Oeko-Tex® 100 certified and mulesing-free
- Seamless design for maximum comfort
- Ergonomic fit to prevent creasing
- Extremely elastic for optimal freedom of movement
- Made in Germany.

5. iXS Function T-shirt TS3 Merino gray 2XL/
The SIXS Carbon Merino Underwear Long Sleeve Stand-Up Collar Shirt is breathable and thermoregulating in all weather conditions. The long sleeves completely envelop the arms, keeping the skin fresh and lying between the skin and outer clothing. At the same time, they provide light protection against cold drafts when a short-sleeve variant is worn over the shirt. The contrasting stand-up collar also protects the neck from sudden temperature fluctuations and drafts.
Technical specifications:
- Seamless technology
- Antistatic system
Composition: 54% Merino wool, 30% polypropylene, 12% polyamide, 2% elastane, 2% carbon fiber
Sizes: S/M, L/XL, 2XL/3XL.

6. iXS Functional T-Shirt TS1 fluo-pink
The SIXS Carbon Underwear Short Sleeve Round Neck T-Shirt is a multi-sport product suitable for all conditions. Unlike the sleeveless model, the sleeves wrap around the upper arm (armpit), which is prone to heavy sweating, keeping the skin dry. The lightest and most breathable polypropylene fiber available on the market, combined with a genuine carbon yarn that offers heat transmission and antistatic properties, protects the body from electrical charge caused by the friction of various synthetic materials (a typical characteristic of sportswear).
Technical details:
- Seamless technology
- Antistatic system
Composition:
77% polypropylene, 15% polyamide, 5% elastane, 3% carbon fiber
Sizes: XS-2XL.

7. iXS Shirt Melange
The Melange shirt from iXS is a functional T-shirt that stands out for its casual look and the use of high-quality microfiber material. It is made with seamless circular knitting technology, ensuring the highest level of comfort. The shirt is particularly breathable and offers excellent moisture transport, making it ideal for active use. With its extremely lightweight and highly elastic material, it provides optimal freedom of movement and a pleasant wearing experience. Additionally, the shirt features temperature-regulating properties, making it an excellent choice for year-round wear. The material composition of 72% polyamide and 28% polyester contributes to the durability and functionality of the shirt.
- Seamless circular knitting technology for maximum comfort
- Particularly breathable for optimal air circulation
- Excellent moisture transport for dry comfort
- Extremely lightweight and highly elastic for maximum freedom of movement
- Temperature-regulating properties for year-round use.

8. iXS Functional T-Shirt TS4 black
Long-sleeve stand-up collar shirt with windproof WindShell Carbon Underwear protection, which is breathable and thermoregulating in all weather conditions. The SIXS Air Shield technology protects the upper body from cold air from the front. A thin layer of breathable, windproof fibers creates an air cushion that protects the body without causing the typical greenhouse effect with increased sweating. The contrasting stand-up collar also protects the neck from sudden temperature fluctuations and drafts. Ideal for outdoor sports.
Technical details:
- Seamless technology
- Antistatic system
- Wind-resistant fabric
Composition:
77% polypropylene, 15% polyamide, 5% elastane, 3% carbon fiber
Sizes: XS-2XL.

9. iXS Function T-shirt TS4 black 2XL
A long-sleeved T-shirt with wind protection is SIXS's solution for winter clothing. Unlike all other windproof garments on the market, SIXS has developed a T-shirt that protects against cold air without creating the greenhouse effect typical of windstopper fabrics. Our technology ensures that sweat does not come into contact with the athlete's skin, and the garment also provides adequate protection for the entire front, which is most exposed to cold air. The back of the T-shirt benefits from the classic SIXS original carbon underwear technology, which keeps the skin free from sweat accumulation. The arms also remain dry and are protected from cooling during physical activities.

10. iXS Functional T-Shirt TS3 black
The SIXS Carbon Underwear Long Sleeve Stand-Up Collar Shirt is breathable and thermoregulating in all weather conditions. The long sleeves fully envelop the arms, keeping the skin fresh and lying between the skin and outer layers. At the same time, they provide light protection against cold drafts when a short-sleeve variant is worn over the shirt. The contrasting stand-up collar also protects the neck from sudden temperature fluctuations and drafts.
Technical specifications:
- Seamless technology
- Antistatic system
Composition: 77% polypropylene, 15% polyamide, 5% elastane, 3% carbon fiber
Sizes:
XS-2XL.
