The Optimus Base Layer top with a short zipper from Umbro is a functional shirt specifically designed for athletic activities. Made from a high-quality blend of 95% polyester and 5% elastane, it offers excellent breathability and freedom of movement. The design features a practical 1/4 zipper that allows for personalized ventilation, as well as tonal elbow inserts that provide additional comfort. With a high cut and long sleeves, this top is ideal for training sessions and outdoor activities. It also offers UV protection, making it an excellent choice for sunny days. The simple, solid color design is complemented by the Umbro logo, giving the shirt a sporty touch.
| Clothing size | M | 
| Sleeve length | Long sleeves | 
| Material composition | 5% elastane, 95% polyester | 
| Target group | Boys | 
| Item number | 53922433 | 
| Manufacturer | Umbro | 
| Category | Functional undershirts | 
| Manufacturer no. | UTUO2424 | 
| Release date | 9.1.2025 | 
| Colour | Black | 
| Exact colour description | Black | 
| Material composition | 5% elastane, 95% polyester | 
| Target group | Boys | 
| Age group | Children | 
| Clothing size | M | 
| Sleeve length | Long sleeves | 
| Fabric properties | Breathable, UV protection | 
| Pattern | Unicoloured | 
| Country of origin | China | 
| CO₂-Emission | |
| Climate contribution | 
| Ingredients | 95% polyester/5% elastane. | 
How often does a product of this brand in the «Functional undershirts» category have a defect within the first 24 months?
Source: Digitec GalaxusHow many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?
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How often is a product of this brand in the «Functional undershirts» category returned?
Source: Digitec Galaxus