How can we help you?

Socks

Sock size	36-40	41-46	47-51
EUR shoe size	36-40	41-46	47-51
US sock size	9-11	10-13
US M shoe size	4.5-7.5	8-12	13+
US W shoe size	5.5-9.5	10-12.5
UK M shoe size	4-7	7.5-11.5	12+
UK W shoe size	3.5-6.5	7-11
JPN shoe size	23-25.5	26-29.5	30-33.5
CN shoe size	23-25cm	25.5-28cm	28-30cm

Kids: Socks & tights

Socks

Sock size (age)	0-12M	12-24M	2-3Y	4-6Y	7-9Y
EUR shoe size	13-21	22-24	24-26	28-31	33-35
US shoe size	0.5-5.5	6-8	8-9.5	11-13.5	1.5-3.5
UK shoe size	0-4.5	5.5-7	7-8.5	10-12.5	1-2.5
JPN shoe size	8.5-11.5	12-14	14.5-16.5	17-19	19.5-21.5
CN shoe size	8.5-11.5cm	12-14cm	14.5-16.5cm	17-19cm	19.5-21.5cm

Tights

Tights size (age)	6-12M	12-18M	18-24M
EUR tights size	74-80	80-86	86-92
US tights size	29-31"	31-34"	34-36"
UK tights size	68-80	80-86	86-92
JPN tights size	74-80	86	92
CN tights size	74-80cm	86cm	92cm

Swimwear

Swimshorts

Swimshorts size	S	M	L	XL	XXL
EUR size	46	48	50	52	54
US/UK size	36	38	40	42	44
US (in)	28-30	31-32	33-34	34-36	38
Waist	74cm / 29.1"	80cm / 31.4"	86cm / 33.8"	92cm / 36.2"	98cm / 38.6"
Length	35cm / 13.8"	36cm / 14.2"	38cm / 15"	39cm / 15.3"	40cm / 15.7"
Inseam	12cm / 4.7"	12cm / 4.7"	13cm / 5.1"	13cm / 5.1"	13cm / 5.1"
Leg opening	60.7cm / 23.9"	63cm / 24.8"	65.3cm / 25.7"	67.6cm / 26.6"	69.9cm / 27.1"

Swimsuits

Swimsuit size	XS	S	M	L	XL
EUR size	32-34	36-38	38-40	42-44	44-46
US size	0-2	4-6	6-8	10-12	12-14
UK size	4-6	8-10	10-12	14-16	16-18
Height	150-160cm / 59-63"	160-170cm / 63-67"	165-175cm / 65-69"	170-180cm / 67-71"	180-190cm / 71-75"

Kids swimwear

Swimwear size (age)	2-3Y	4-6Y	7-9Y
EUR size	98/104	110/116	122/128
US size	3T-4T	6	7-8
UK size	3-4	5-6	7-8

Pool sliders

We recommend measuring the foot for the closest fitting size.

Length: the length of the inside sole of the slider

Width: the width of the strap, which covers the widest part of the foot

Height upper tiptoe: the height of the front opening (by the toes) of the strap

Height upper instep: the height of the opening of the strap. The instep is the highest part of the foot.

Slider size	36-37	38-39	40-41	42-43	44-45	46
EUR shoe size	36-37	38-39	40-41	42-43	44-45	46
US M shoe size	2.5-3.5	4.5-5.5	6.5-7.5	8.5-9.5	10.5-11.5	12.5
US W shoe size	5-6	7-8	9-10	11-12	13-14	15
UK M shoe size	2-3	4-5	6-7	8-9	10-11	12
UK W shoe size	3-4	5-6	7-8	9-10	11-12	13
JPN shoe size	21-22	23-24	25-26	27-28	29-30	31
Length inside sole	24cm / 9.5in	25.2cm / 9.9in	26.4cm / 10.4in	27.6cm / 10.9in	28.8cm / 11.3in	30cm / 11.8in
Width	9cm / 3.5in	9.4cm / 3.7in	9.8cm / 3.9in	10.2cm / 4in	10.6cm / 4.2in	10.9cm / 4.3in
Height upper tiptoe	3.2cm / 1.3in	3.3cm / 1.3in	3.4cm / 1.3in	3.5cm / 1.4in	3.6cm / 1.4in	3.7cm / 1.5in
Height upper instep	5.2cm / 2in	5.5cm / 2.1in	5.7cm / 2.2in	6cm / 2.3in	6.2cm / 2.4in	6.4cm / 2.5in

Happy Socks x Crocs clogs

Crocs size	36-37	37-38	38-39	39-40	41-42	42-43	43-44	45-46
EUR shoe size	36-37	37-38	38-39	39-40	41-42	42-43	43-44	45-46
US M shoe size	2.5-3.5	3.5-4.5	4.5-5.5	5.5-6.5	7.5-8.5	8.5-9.5	9.5-10.5	11.5-12.5
US W shoe size	5-6	6-7	7-8	8-9	10-11	11-12	12-13	14-15
UK M shoe size	2-3	3-4	4-5	5-6	7-8	8-9	9-10	11-12
UK W shoe size	3-4	4-5	5-6	6-7	8-9	9-10	10-11	12-13
Length (cm)	22.1	22.9	23.8	24.6	25.5	26.3	27.2	28
Length (in)	8 5/8	9	9 3/8	9 5/8	10	10 3/8	10 5/8	11