Size Chart – OnerockinS

Every measurement below is in inches, taken flat across the garment rather than around the body, and comes from the blank manufacturer’s own specification. Our items are printed and finished to order, so allow a tolerance of up to one inch.

How to measure

The most reliable way to pick a size is to lay flat a shirt you already own and like the fit of, measure it, then match those numbers to the tables below.

AWidth. Lay the garment flat and measure straight across the chest, from one underarm seam to the other. Do not stretch the fabric.
BLength. Measure from the highest point of the shoulder straight down to the bottom hem.
Between two sizes? Take the larger one. These are unisex cuts and most people prefer the roomier fit.

Classic T-Shirt G500

Our default tee. Regular fit, true to size, S through 5XL.

Size	Width	Length
S	18	28
M	20	29
L	22	30
XL	24	31
2XL	26	32
3XL	28	33
4XL	30	34
5XL	32	35

Pullover Hoodie G185

Heavyweight fleece with a front pouch pocket. Same body block as the crewneck.

Size	Width	Length
XS	18	26
S	20	27
M	22	28
L	24	29
XL	26	30
2XL	28	31
3XL	30	32
4XL	32	33
5XL	34	34

Long Sleeve T-Shirt G240

Same body block as the classic tee, with full-length sleeves.

Size	Width	Length
XS	16	27
S	18	28
M	20	29
L	22	30
XL	24	31
2XL	26	32
3XL	28	33
4XL	30	34
5XL	32	35

Crewneck Sweatshirt G180

Heavyweight fleece, no hood. Boxier through the body than a tee.

Size	Width	Length
XS	18	26
S	20	27
M	22	28
L	24	29
XL	26	30
2XL	28	31
3XL	30	32
4XL	32	33
5XL	34	34

Premium SS Shirt NL3600

Fitted cut in lighter combed cotton. The only style that runs to 6XL.

Size	Width	Length
XS	17.5	27
S	19	28
M	20.5	29
L	22	30
XL	24	31
2XL	26	32
3XL	28	33
4XL	30	34
5XL	32	35
6XL	34	36

Jersey Tank 3480

Sleeveless, side-seamed, slightly longer body than a tee.

Size	Width	Length
S	16.25	27
M	18.25	28
L	20.25	29
XL	22.25	30
2XL	24.25	31

Ladie’s T-Shirt G500L

Shaped through the waist and shorter in the body than the classic tee.

Size	Width	Length
S	17.25	25.5
M	19.25	26
L	21.25	27
XL	23.25	28
2XL	25.25	28.5
3XL	27.25	29

Ladies’ Boyfriend NL3900

Deliberately relaxed through the shoulder and chest, cropped shorter.

Size	Width	Length
S	16.25	25.38
M	17.25	25.38
L	18.75	26.63
XL	19.25	27.25
2XL	21.25	27.82
3XL	22.75	28.5

Ladies Racerback Tank NL1533

Narrow racerback cut with a long, lean body.

Size	Width	Length
S	15	27.5
M	16	28
L	17	28.5
XL	18	29
2XL	19	29.5

Youth Cotton T-Shirt G500B

Youth sizing runs YXS to YXL and is cut noticeably shorter than adult sizes.

Size	Width	Length
YXS	16	20.5
YS	17	22
YM	18	23.5
YL	19	25
YXL	20	26.5

Premium Boys Cotton T-Shirt NL3310

Slimmer and shorter than the standard youth tee — check both tables before choosing.

Size	Width	Length
YXS	14	19
YS	15.5	20.5
YM	17	22
YL	18.5	23.5
YXL	20	25

Youth Pullover Hoodie G185B

Youth fleece hoodie. Sized well below the adult hoodie.

Size	Width	Length
YXS	16	19.75
YS	17	21.25
YM	18	22.5
YL	19	24
YXL	20	25.5

Youth LS T-Shirt G540B

Same body block as the youth cotton tee, with full-length sleeves.

Size	Width	Length
YXS	16	20.5
YS	17	22
YM	18	23.5
YL	19	25
YXL	20	26.5

Still unsure which size to order? Email [email protected] with the style you are looking at and we will tell you what we would pick. Sizing exchanges are covered by our return & refund policy.