adidas UltraBoost 21 'Grey Sonic Ink'

Name: adidas UltraBoost 21 'Grey Sonic Ink'
Brand: adidas
SKU: S23871
Availability: InStock

adidas · Style S23871 · Released 2021-08-31

from $324.90

Select a size:

Use the chart below to convert between US, UK, EU and JP sizes.

US	UK	EU	JP (cm)
4	3.5	36	22.1
4.5	4	36 2/3	22.5
5	4.5	37 1/3	22.9
5.5	5	38	23.3
6	5.5	38 2/3	23.8
6.5	6	39 1/3	24.2
7	6.5	40	24.6
7.5	7	40 2/3	25.0
8	7.5	41 1/3	25.5
8.5	8	42	25.9
9	8.5	42 2/3	26.3
9.5	9	43 1/3	26.7
10	9.5	44	27.1
10.5	10	44 2/3	27.6
11	10.5	45 1/3	28.0
11.5	11	46	28.4
12	11.5	46 2/3	28.8
12.5	12	47 1/3	29.3
13	12.5	48	29.7
13.5	13	48 2/3	30.1
14	13.5	49 1/3	30.5
14.5	14	50	31.0
15	14.5	50 2/3	31.4
16	15	51 1/3	31.8
17	16	52 2/3	32.6
18	17	53 1/3	33.5
19	18	54 2/3	34.3
20	19	55 2/3	35.2

US	UK	EU	JP (cm)
5	3.5	36	22.1
5.5	4	36 2/3	22.5
6	4.5	37 1/3	22.9
6.5	5	38	23.3
7	5.5	38 2/3	23.8
7.5	6	39 1/3	24.2
8	6.5	40	24.6
8.5	7	40 2/3	25.0
9	7.5	41 1/3	25.5
9.5	8	42	25.9
10	8.5	42 2/3	26.3
10.5	9	43 1/3	26.7
11	9.5	44	27.1
11.5	10	44 2/3	27.6
12	10.5	45 1/3	28.0
12.5	11	46	28.4
13	11.5	46 2/3	28.8
13.5	12	47 1/3	29.3
14	12.5	48	29.7
14.5	13	48 2/3	30.1
15	13.5	49 1/3	30.5
15.5	14	50	31.0

US	UK	EU	JP (cm)
1k	0k	16	8.1
2k	1k	17	9.0
3k	2k	18	9.8
4k	3k	19	10.6
5k	4k	20	11.5
5.5k	5k	21	12.3
6k	5.5k	22	12.8
6.5k	6k	23	13.2
7k	6.5k	23.5	13.6
7.5k	7k	24	14.0
8k	7.5k	25	14.5
8.5k	8k	25.5	14.9
9k	8.5k	26	15.3
9.5k	9k	26.5	15.7
10k	9.5k	27	16.1
10.5k	10k	28	16.6
11k	10.5k	28.5	17.0
11.5k	11k	29	17.4
12k	11.5k	30	17.8
12.5k	12k	30.5	18.3
13k	12.5k	31	18.7
13.5k	13k	31.5	19.1
1	13.5k	32	19.5
1.5	1	33	20.0
2	1.5	33.5	20.4
2.5	2	34	20.8
3	2.5	35	21.2
3.5	3	35.5	21.6
4	3.5	36	22.1
4.5	4	36 2/3	22.5
5	4.5	37 1/3	22.9
5.5	5	38	23.3
6	5.5	38 2/3	23.8
6.5	6	39 1/3	24.2
7	6.5	40	24.6
7.5	7	40 2/3	25.0

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Size, price & UPC details

Size	Price	UPC	Delivery
US M 7.5 / W 8.5	—	191985518854	Out of stock
US M 8 / W 9	—	191985515204	Out of stock
US M 8.5 / W 9.5	—	191985515211	Out of stock
US M 9 / W 10	—	191985515235	Out of stock
US M 9.5 / W 10.5	—	191985515105	Out of stock
US M 10 / W 11	—	191985515181	Out of stock
US M 10.5 / W 11.5	—	194830833010	Out of stock
US M 11 / W 12	—	191985515174	Out of stock
US M 11.5 / W 12.5	—	191985515082	Out of stock
US M 12 / W 13	—	191985515198	Out of stock
US M 13 / W 14	—	191985515075	Out of stock
US M 14 / W 15	$324.90	—	3-4 business days