Please find product-specific sizing advice on each relevant product page, under the description

Shorts

Size	Waist (in)	Standard Female Size	Standard Male Size
XS	24-26	UK 6-8	XS
S	27-29	UK 8-10	S
M	30-32	UK 10-12	M
L	33-35	UK 14-16	L
XL	36-38	UK 16-18	XL

 

Quarter Zips and Hoodies

Size	Chest Width (in)	Sleeve Length (in)	Body Length (in)	Standard Female Size	Standard Male Size
XS	41	26	24	UK 8-10	XS
S	42	26.5	25	UK 10-12	S
M	44	27	26	UK 12-14	M
L	45	27.5	28	UK 14-16	L
XL	47	28	30	UK 16-18	XL

 

T-Shirts

Size	Chest Width (in)	Standard Female Size	Standard Male Size
XS	41	UK 8-10	XS
S	42	UK 10-12	S
M	44	UK 12-14	M
L	45	UK 14-16	L
XL	47	UK 16-18	XL

 

Polo Shirts

Size	Chest Width (in)	Standard Female Size	Standard Male Size
XS	41	UK 8-10	XS
S	42	UK 10-12	S
M	44	UK 12-14	M
L	45	UK 14-16	L
XL	47	UK 16-18	XL

 

Joggers

Size	Waist (in)	Leg Length (in)	Standard Female Size	Standard Male Size
XS	26-28	39	UK 8-10	XS
S	28-30	40	UK 10-12	S
M	30-32	41	UK 12-14	M
L	32-34	42	UK 14-16	L
XL	34-36	43	UK 16-18	XL