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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Size, price & UPC details
Size
Price
UPC
Delivery
US M 6 / W 7
$255.60
—
3-4 business days
US M 11.5 / W 12.5
—
—
Out of stock
About the adidas Y-3 Idoso Boost 'Black Bliss'
The adidas Y-3 Idoso Boost ‘Black Bliss’ pairs avant-garde style with performance running technology. An asymmetrical lacing system secures the flexible upper, constructed from black woven textile with open mesh quarter panels and a forefoot overlay in tan synthetic leather. Dual adidas and Yohji Yamamoto branding adorns the tongue, while a debossed Y-3 logo appears on the molded heel cup. A hybrid midsole combines plush EVA foam with responsive Boost cushioning in the heel.