T-Shirt Size Guide

Start With a Shirt You Love

This size guide applies to the adult unisex T-shirts offered by OY GOY! Please check each product’s description for any style-specific sizing.

Compare the chart with a T-shirt that already fits you comfortably. These are garment measurements, not body measurements.

Four illustrated steps: lay a well-fitting shirt flat, measure across below the armpits, measure from shoulder beside collar to hem, then compare to the size chart. — Select the illustration to view it larger. Measuring tape markings are illustrative; use the written chart below.

Lay it flat. Smooth the shirt on a level surface without stretching it.
A — Width: Measure straight across just below the armpits, from edge to edge. This is half the shirt’s circumference.
B — Length: Measure from the highest shoulder point beside the collar down to the bottom hem.
Compare: Use the same units below. For a roomier fit, choose measurements larger than your comparison shirt.

Adult Unisex Size Chart

Width is measured flat across the chest; length is measured shoulder to hem.

Garment dimensions · inches and centimeters
Size	Width (in)	Length (in)	Width (cm)	Length (cm)
XS	16	27	40.6	68.6
S	18	28	45.7	71.1
M	20	29	50.8	73.7
L	22	30	55.9	76.2
XL	24	31	61.0	78.7
2XL	26	32	66.0	81.3
3XL	28	33	71.1	83.8
4XL	30	34	76.2	86.4
5XL	32	35	81.3	88.9

Measurements are approximate. Allow for a size tolerance of 1.5 inches (3.8 cm). Sizes and colors depend on the product offered; this chart does not guarantee availability.

This guide applies to our adult unisex T-shirts. Check the specific product’s size information before ordering; other styles may fit differently.

Fit & Fabric

Our adult unisex crewneck T-shirts have a classic fit. For the most reliable fit, compare the measurements above with a shirt you already wear. If you prefer extra room, choose a size with a wider chest measurement.

Lightweight fabric: 4.5 oz/yd² (153 g/m²). The ring-spun fabric is soft, with a ribbed collar, reinforced shoulder seams, and a tear-away label.

Solid colors: 100% ring-spun cotton.
Heather colors: 35% ring-spun cotton / 65% polyester.
Sport Grey and Antique colors: 90% cotton / 10% polyester.
Graphite Heather: 50% ring-spun cotton / 50% polyester.

Check the individual product description for the exact color, fabric blend, and available sizes.

Keep Your Shirt Looking Its Best

Machine wash cold, up to 30°C / 90°F, with similar colors.
Tumble dry on low heat.
Do not bleach or dry clean.
Use low heat if ironing; avoid ironing directly over the printed design.

Cotton can shrink. Follow the garment’s care label and avoid high heat.

Need Help Choosing?

Email richie@oygoy.shop.

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