What to Look for in a Quality T-Shirt
Most t-shirts look similar on the rack. Same shape, same basic construction, often similar prices. The differences that determine whether something lasts two years or two seasons are mostly invisible until you know what to check. Here's what to look for.
1. GSM Weight
GSM stands for grams per square meter — the standard measure of fabric density. It tells you how heavy and substantial a fabric is before you've touched it, and it's the single most predictive factor in a t-shirt's longevity.
150gsm and under: Lightweight. These shirts feel soft and drape well when new, but tend to go transparent in direct light, lose their shape after several washes, and pill more quickly. Fine for a one-season piece; not the right call for a wardrobe staple.
160–180gsm: The everyday sweet spot. Enough weight to hold structure through repeated washing, opaque in normal lighting, and still comfortable in warm weather. A well-constructed shirt in this range will last significantly longer than anything below it.
200–220gsm and above: Heavier and more structured — closer to the weight you'd expect from a quality sweatshirt. These shirts feel substantial and hold their shape well, but can feel heavy in hot weather. Better suited for layering or cooler seasons.
For a year-round everyday t-shirt, 180gsm is the most versatile weight. It's not too warm in summer and not too thin to wear as a single layer in autumn.
2. Weave Type
The two weave types you'll encounter most often in t-shirts are jersey and piqué.
Jersey is what most plain t-shirts are made from: a single-knit fabric with a smooth face and a slightly textured back. It stretches easily in both directions and drapes against the body. Jersey is comfortable, breathable, and the right choice for a clean, minimalist tee.
Piqué (sometimes called waffle knit or polo fabric) has a raised, textured weave pattern. It's more structured and less drapey than jersey. You'll see it most often in polo shirts. It's a deliberately different aesthetic choice — not better or worse than jersey, just different. For plain basics, jersey is almost always the correct answer.
When evaluating jersey, look for consistency. Hold the shirt up to a light source and check that the weave is even across the body — no thin patches, no pulled threads, no variation in density. Inconsistent knitting is a sign of lower-quality production.
3. Fiber Content
100% cotton breathes well, ages well, and softens with washing rather than pilling. It's the right choice for everyday wear if comfort and longevity are the priorities.
Poly-cotton blends (typically 50/50 or 60/40 cotton/polyester) are wrinkle-resistant and dry faster, but they pill more easily and don't breathe as well. Some people prefer the feel for athletic wear. For a classic everyday t-shirt, they're a compromise that tends to favor the manufacturer over the wearer.
Tri-blends (cotton, polyester, rayon) are extremely soft when new but can feel thin and can be difficult to care for properly. They look vintage by design — fine if that's what you want, but they won't hold up the same way a heavier cotton garment will.
Check the label before buying. The fiber content is required to be listed accurately. If a brand doesn't disclose it, that's worth noting.
4. Seam Construction
Turn the shirt inside out.
Double-needle seams run two parallel rows of stitching — you'll see two lines of thread rather than one. This distributes stress across the seam and prevents the fabric from rolling or stretching out at the edges. It's standard on quality garments. Single-needle seams are faster and cheaper to produce and are more likely to unravel or curl over time.
Stitch count: More stitches per inch means tighter, stronger seams. A loose stitch looks slightly gapped when you hold the seam up close. A tight stitch looks dense and even. This is easiest to evaluate at the collar, armhole, and side seams — the points that take the most stress.
Collar reinforcement: On a crew-neck tee, check whether the collar has a rib knit separate from the body fabric, and whether there are additional stitches at the join. A collar that's poorly attached will start to warp after washing.
5. The Tug Test
Hold the fabric in two hands about four inches apart and give it a firm tug. Watch what happens next: does it snap back cleanly, or does it stay slightly stretched?
Good fabric recovers quickly. It has enough elasticity (from the natural give in cotton jersey) to bounce back without retaining the stretched shape. Fabric that stays deformed is either too loosely knit or contains a fiber blend that doesn't recover well.
Repeat the test at the seams — pull gently across a seam rather than along it. A well-stitched seam won't gap or buckle.
How Forme Studio's Essential Tee Measures Up
The Essential Tee is 180gsm 100% GOTS-certified cotton in a single-knit jersey weave — checking each criterion above directly:
- GSM: 180gsm, the everyday sweet spot. Substantial without being heavy.
- Weave: Clean jersey with consistent knit density — no thin patches, no variation.
- Fiber: 100% cotton. No blends. GOTS-certified from fiber through finished product, which means the cotton was grown without synthetic pesticides and processed with GOTS-approved dyes and chemicals.
- Seams: Double-needle throughout, reinforced at collar and armhole.
- Tug test: The fabric recovers cleanly. It holds its shape through washing in the way a properly weighted, single-fiber cotton should.
It's designed to be the piece you reach for most often — which means it needs to perform consistently over time, not just on the first wear.