Joybuy Insights

Buying T-shirts online: how to choose the right fit, fabric and features

If you want to buy T-shirts online, you’ll find a wide choice of cuts, fabrics and multipacks. Product photos alone can’t tell you whether a shirt will feel comfortable day to day, keep its shape after washing or be suitable for sport. The following points can help you look beyond the marketing claims and find the right option for everyday wear, leisure, travel or training.

Common pitfalls when shopping online

1. Comparing sizes incorrectly

An M in an oversized T-shirt can be considerably looser than an M in a fitted basic T-shirt. EU, UK, US, FR and IT sizes also differ. If you order based only on the letter size you usually wear, you risk ending up with sleeves that are too short, a tight neckline or a silhouette that’s unexpectedly loose.

So check the chest, shoulder and length measurements in the size chart. For long-sleeved shirts and Tall Fit styles, the overall length is particularly important.

2. Fabric descriptions can sound more informative than they are

Terms such as “cotton feel”, “soft touch” or “performance fabric” don’t automatically tell you what a garment is made of. The fibre content, fabric weight and care instructions are what matter.

Cotton T-shirts are often comfortable and breathable for everyday wear and leisure. Polyester and technical blends can offer practical benefits for sport and travel. However, a high cotton content isn’t automatically the best choice for every activity, as cotton can hold on to moisture for longer.

3. Functional claims aren’t always backed up with specifics

Terms such as “moisture-wicking”, “quick-drying” or “antibacterial” should be considered alongside specific fabric and care details. Check whether the manufacturer provides technical data or an exact fibre composition, or is simply making a general marketing claim. Such claims don’t establish any medical or therapeutic effects.

What to check before you buy

Fit and cut

Choose a cut to suit how you’ll wear it:

  • Regular Fit: a versatile basic T-shirt that’s also suitable for layering.
  • Oversized T-shirts: offer more room and a relaxed silhouette; the actual measurements matter more than the size label.
  • Tall Fit: a good choice if you have a longer torso or want the shirt to provide enough coverage when sitting or bending.
  • Long-sleeved shirts: work well as an extra layer under jackets, shirts or jumpers.

Men’s T-shirts and women’s T-shirts may differ in cut, shoulder width and hem length. Choose unisex styles using the specific size chart.

Fabric and fabric weight

Fibre content affects a garment’s feel, care requirements and suitability for different uses. For example, a fabric weight of 180 g/m² indicates a medium-weight jersey, while 240 g/m² suggests a heavier fabric. Weight isn’t a general measure of quality, but it can help you assess opacity, warmth and drape.

A cotton T-shirt multipack is a practical option if you want shirts that are easy to care for. For training, hiking or warm days on the go, performance shirts made from polyester or specialist blends may be better suited to managing moisture. Check the care instructions before you buy, especially if you wash at low temperatures or avoid using a tumble dryer.

How you’ll wear it and how you’ll layer it

A shirt for the office that you’ll wear as a base layer needs different features from a sports T-shirt. Ask yourself:

  1. Will the fabric sit directly against your skin, or will you wear it over a vest?
  2. Should it sit neatly under a jacket or jumper without adding bulk?
  3. Will it get a lot of wear, need frequent washing or have to dry quickly while you’re travelling?
  4. Do you need a particular sleeve length for the season?

If you change your shirt regularly, a multipack can reduce the number of individual orders you need to place. For seasonal wear, colours such as white, black and grey are especially easy to coordinate.

Choose according to how you’ll use it

A good fit for: budget-conscious first-time buyers
Claudio 5-pack T-shirt Cotton White

Claudio 5-pack T-shirt Cotton White

Why this product suits this profile: This five-pack provides several white basic T-shirts for everyday wear, leisure and layering. According to the product details, the shirts are made from 100% cotton and are available in sizes from XXXS to 4XL.

How this product avoids the pitfall

The pack size is clearly stated, making it easier to plan how many everyday shirts you need without paying for features you won’t use.

Key benefits & strengths

100% cotton according to the product details; five shirts per pack; international size chart up to 4XL.

A good fit for: quality-conscious shoppers
Urban Classics Tall Tee L/S T-Shirts White 6XL

Urban Classics Tall Tee L/S T-Shirts White 6XL

Why this product suits this profile: According to the product description, this long-sleeved shirt combines a Tall Fit with extra length, a crew neck and single jersey made from 90% cotton and 10% viscose.

How this product avoids the pitfall

The extra length helps avoid the common problem of a hem that’s too short. The stated fabric weight of 180 g/m² also makes it easier to get a sense of how the fabric will feel.

Key benefits & strengths

Tall cut; long-sleeved design; fabric blend of 90% cotton and 10% viscose according to the product details.

A good fit for: specific activities & frequent wear
Nike Dry Park 20 T-Shirt in Black

Nike Dry Park 20 T-Shirt in Black

Why this product suits this profile: According to the product description, this sports T-shirt is made from 100% lightweight polyester and is designed for training, team sports and active leisurewear.

How this product avoids the pitfall

The fibre content is clearly stated. The care instructions recommend machine washing and a gentle drying cycle, making it easier to plan for regular care.

Key benefits & strengths

100% polyester according to the product details; sizes from XXXS to 4XL according to the description; suitable for training and leisure.

A good fit for: layering and travel
BAMBOO COOL Men's Undershirt Moisture-Wicking T-Shirts

BAMBOO COOL Men's Undershirt Moisture-Wicking T-Shirts, 3 Pack

Why this product suits this profile: According to the product details, this three-pack is designed for layering, the office, leisure and active wear. The design includes a tag-free finish and extra length for tucking in.

How this product avoids the pitfall

The clearly stated pack size and intended use as a base layer make it easier to match your purchase to your actual needs. Check the fabric details on the product page again before ordering.

Key benefits & strengths

Three-pack; longer cut for tucking in; tag-free design according to the product description.

More things to consider when placing your order

When choosing T-shirts in larger sizes, don’t just check the largest size available. Hem length, chest width and the amount of room you want to move comfortably are also important. Women may prefer a deliberately looser oversized cut, while a Tall style can give men extra length.

Also check the returns policy, delivery time, colour option and care label. For white shirts, the recommended washing temperature and avoiding bleach may matter. Wash black and coloured styles with similar colours, following the care instructions.

Looking for more options?

We’ve put together a complete, regularly updated list of products that meet these strict selection criteria and fully comply with the safety regulations in force in the EU.

FAQ: Frequently asked questions about buying T-shirts

What size T-shirt should I order online?

Compare your chest, shoulder and body-length measurements with the size chart for the specific style. For oversized and Tall cuts, don’t automatically size up or down; check the garment measurements provided instead.

How long does a T-shirt last?

A T-shirt’s lifespan depends on its fabric, how often you wear it, the wash cycle, how it’s dried and how much wear and tear it gets. Following the care label, using low drying temperatures and avoiding overfilling the washing machine can help the shirt keep its shape and finish for longer.

Are cotton shirts or performance shirts better for sport?

It depends on the activity and your personal preference. Cotton is a popular choice for everyday wear and leisure. According to the product description, moisture-wicking T-shirts made from polyester or technical blends are designed to manage moisture in certain sports styles. This feature doesn’t replace checking the fit, care instructions and comfort for yourself.