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adidas UltraBoost 21 'Grey'

Name: adidas UltraBoost 21 'Grey'
Brand: adidas
SKU: FY0381
Availability: InStock

adidas · Style FY0381 · Released 2021-01-28

$190.00$141.3726% UNDER RETAIL

You save $48.63 vs the $190.00 retail price.

Select a size:

Size chart — adidas

Full adidas size guide

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

Men

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

Women

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

Kids

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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14-day returns & equal-value exchanges — policy

Size, price & UPC details

Size	Price	UPC	Delivery
US M 4 / W 5	$141.37	194813165428	3-4 business days
US M 4.5 / W 5.5	—	194813161758	Out of stock
US M 5 / W 6	—	194813165411	Out of stock
US M 5.5 / W 6.5	—	194813165367	Out of stock
US M 6 / W 7	—	194813161741	Out of stock
US M 6.5 / W 7.5	—	194813161734	Out of stock
US M 7 / W 8	—	194813161710	Out of stock
US M 7.5 / W 8.5	$214.90	194813161727	3-4 business days
US M 8 / W 9	—	194813161703	Out of stock
US M 8.5 / W 9.5	—	194813161673	Out of stock
US M 9 / W 10	—	194813161642	Out of stock
US M 9.5 / W 10.5	$176.40	194813161680	5-7 business days
US M 10 / W 11	$176.40	194813161635	5-7 business days
US M 10.5 / W 11.5	$176.40	194816368352	5-7 business days
US M 11 / W 12	$176.40	194813161666	5-7 business days
US M 11.5 / W 12.5	$176.40	194813165374	5-7 business days
US M 12 / W 13	—	194813165404	Out of stock
US M 12.5 / W 13.5	—	194813165381	Out of stock
US M 13 / W 14	—	194813165398	Out of stock
US M 13.5 / W 14.5	—	194811760236	Out of stock
US M 14 / W 15	—	194813161659	Out of stock
US M 14.5 / W 15.5	—	194811760243	Out of stock
US M 15 / W 16	—	194813161697	Out of stock
US M 16 / W 17	—	194819544890	Out of stock
US M 17 / W 18	—	194819545187	Out of stock
US M 18 / W 19	—	194819544906	Out of stock

About the adidas UltraBoost 21 'Grey'

The adidas UltraBoost 21 ‘Grey’ applies a monochromatic neutral finish to the lightweight and responsive performance running shoe. The sneaker’s breathable knit build, incorporating recycled Primeblue materials that include Parley Ocean Plastic, sits atop full-length Boost cushioning that packs 6% more Boost capsules than the UltraBoost 20. Underfoot, a revised Torsion system dubbed Linear Energy Push yields improved forefoot stiffness and energy return.