Buying clothes online should feel exciting, not like a guessing game. This guide to unisex clothing sizes makes it easier to choose a tee or everyday staple that feels right from the first wear - whether you like a cleaner fit or want that properly relaxed, oversized look. 🙌
Unisex clothing is designed to be worn by everyone, but that does not mean every unisex garment fits the same way. A medium in one brand can sit very differently to a medium in another, especially when the cut is intentionally oversized. The best move is to ignore the letter on the tag for a moment and focus on the garment measurements, fit notes and the look you actually want.
What unisex sizing really means
Unisex sizing usually starts with a straighter, less body-specific shape. Compared with traditionally gendered cuts, it often gives more room through the body, shoulders and sleeves. That flexibility is exactly why it works so well for casual streetwear, but it also means your usual size is only a starting point.
Some unisex pieces are cut close to the body and simply have a broad size range. Others are deliberately oversized, with dropped shoulders, a wider chest and extra length. Neither is better. It depends on whether you want a tee that layers neatly under a jacket or one that carries the whole outfit with relaxed confidence.
Do not assume unisex means one standard fit for all bodies. Height, shoulder width, chest, preferred sleeve length and personal style all affect how a piece will sit. Two people can buy the same size and both look great, just with completely different proportions.
How to read a unisex clothing size guide
The size chart is your best tool, especially when shopping online. Look for measurements in centimetres and check whether they refer to the garment itself or the body it is intended to fit. Garment measurements tell you the actual width and length of the item. Body measurements offer a recommended range. They are useful in different ways, so read the labels carefully.
For a T-shirt, chest width and body length do most of the heavy lifting. Chest width is commonly measured flat, straight across from underarm to underarm. Double that number to get the approximate full chest circumference of the garment. If you already own a tee that fits exactly how you like, lay it flat and compare its measurements with the chart. It is the fastest, most reliable online sizing trick going.
When measuring a favourite tee, keep it on a flat surface and smooth it out without stretching it. Check these four points:
- Chest width: measure from underarm seam to underarm seam.
- Body length: measure from the highest point of the shoulder to the hem.
- Shoulder width: measure across the upper back from shoulder seam to shoulder seam.
- Sleeve length: measure from the shoulder seam to the sleeve opening.
Do not size by labels alone
Small, medium, large and XL are convenient shorthand, not universal measurements. One label may design a medium as a regular fit; another may build it for an intentionally baggy look. This is why a size chart beats relying on what you normally buy at the shops.
If a product description says oversized, take that seriously. Your usual size will often already deliver the relaxed fit shown in the product photos. Sizing up again can work if you are chasing a dramatic, extra-long silhouette, but it may also create sleeves that feel too wide or a hem that sits lower than you expected.
Choose your fit before you choose your size
The right size is not always the smallest size you can wear or the biggest one available. It is the size that matches your intended fit.
For a more standard, easy everyday fit, choose the size closest to your favourite regular tee measurements. You should have room to move without excess fabric bunching at the waist or under the arms. This works well for layering, cleaner outfits and anyone who prefers a relaxed look without going full oversized.
For a relaxed streetwear fit, choose your usual recommended unisex size when the garment is labelled oversized. Look for dropped shoulders and a wider chest, rather than simply adding heaps of length. The goal is an intentional shape, not a tee that feels borrowed from someone twice your size.
For a more pronounced oversized fit, consider going up one size only after comparing the length and chest width. This look can be great with fitted shorts, straight-leg denim or cargos, but it is not always the best choice for shorter frames or for people who prefer sleeves above the elbow. Styling is personal - the chart simply helps you make the choice on purpose.
Use your measurements, not guesswork
If you do not have a favourite garment to compare, take your own body measurements with a soft tape measure. Keep the tape level and comfortably close to the body, not pulled tight. Measure your chest around its fullest point, then compare it against the brand's body-measurement guidance.
Chest is the key measurement for most unisex tops, but do not overlook length. Taller shoppers may prefer extra body length even if their chest measurement falls into a smaller size. Shoppers with broader shoulders may value the shoulder and chest room of a larger size, while choosing a shorter cut can help avoid a swamped-out look.
Between sizes? Think about fabric and fit. A heavyweight cotton tee usually holds its shape and can feel more structured. A lighter jersey may drape closer to the body. If the piece has little stretch and you are between sizes, sizing up can offer more comfort. If it is designed oversized and you are after a tidier shape, the smaller option may be the better call.
Product photos help, but measurements decide
Photos are useful for seeing the vibe: sleeve drop, neckline, fabric weight and how the hem falls. Check the model details if they are provided, particularly their height and the size they are wearing. That context can help you picture the fit on your own frame.
Still, photos cannot replace the chart. Camera angles, styling and tucked hems can all change how large a garment appears. Use the image to choose the look you like, then use measurements to choose the size that gets you closest to it.
If you are buying for someone else, a quick measurement of one of their most-worn tees is far safer than trying to decode their usual label size. It also makes gifting unisex clothing much easier, because you are matching the fit they already enjoy.
Common sizing mistakes to avoid
The biggest mistake is automatically sizing up because the product is unisex. Unisex does not mean undersized. On an oversized tee, your regular size is often the intended relaxed fit. Going up without checking the chart can turn a clean silhouette into too much fabric around the torso and sleeves.
The opposite mistake is sizing down to make an oversized garment look fitted. This can change the shoulder placement and leave the body length shorter than intended. If you want a regular-fit tee, choose a product cut for that purpose where possible. Let oversized pieces do what they are designed to do.
Also, avoid measuring yourself over a bulky hoodie or comparing stretched, worn-out tees to a new garment. Use a fresh, well-fitting item as your reference. Measure twice, compare calmly and you will make a far more confident call.
A quick fit check before checkout
Before adding a unisex tee to your cart, check the fit description, compare chest width and length with a tee you love, and decide whether you want regular, relaxed or oversized. That is it. No complicated fashion rules, no second-guessing.
SBH is built around easy-wearing, unisex essentials, so the aim is simple: choose the size that fits your style, then wear it your way. A great tee should feel comfortable from coffee runs to late nights out - and look like you meant to pick it. ✨