Merz b. Schwanen’s 1950s Lightweight T-Shirt is a 155 GSM loopwheel-knit organic-cotton T-shirt made in Germany. After the first wash, it became substantially shorter and somewhat smaller overall; early pilling and a developing front–back hem imbalance were also visible. Testing is continuing through ten washes and extended wear.
Product overview
Product specifications and supply-chain information are based on information provided by the brand unless otherwise stated.
1. Fabric and construction in new condition
The photographs below document the fabric, collar and overall construction in new condition, before washing.
2. Fit and comfort
Fit shown before washing
3. Testing progress
Dimensions and weight
Tested size: XXL
| Measurement | New | After 1 wash |
|---|---|---|
| Weight | 155,9 g | 154,7 g |
| Body length | 74,1 cm | 69,6 cm |
| Chest width | 55,9 cm | 54,3 cm |
| Sleeve length | 23,7 cm | 22,5 cm |
| Shoulder width | 44,7 cm | 43,8 cm |
| Hem width | 57,4 cm | 55,8 cm |
| Average dimensional change | — | — |
Measurements are recorded to one decimal place, but should not be read as millimetre-level accuracy. Soft garments can shift slightly depending on how they are laid out and positioned.
Visual and structural changes
| Observation | New | After 1 wash |
|---|---|---|
| Transparency | — | — |
| Collar shape | — | — |
| Twisting / skew | — | — |
| Pilling | — | — |
Fabric transparency
The photograph below records the standardised transparency test in new condition, before washing.
Brand claim vs. test results
Brand claim
“ultra-soft texture” and “look and feel wonderful for years to come”
Test results
Pending
Source: Merz b. Schwanen product page · 1 November 2026
4. Traceability and sustainability
Supply-chain traceability
Assessment pending: The product-specific supply chain has not yet been assessed.
Locations and scores will appear here once the product-specific information has been assessed.
Each stage scores 0 if unknown, 0.5 if identified by the brand, or 1 if the brand provided documentation that WTL reviewed and found to substantiate the stated location for this T-shirt or its production batch. Full method →
Source note
Stages will be mapped after product-page information, brand responses and relevant documentation have been assessed.
Product-specific sustainability evidence
Status terms refer to product-specific evidence available for review. “None documented” does not necessarily mean that the feature or practice is absent.
5. Value and verdict
A final verdict and WTL Rating will only be added after the full test is complete.