SIZE GUIDE

Men's

US	UK	EU	JP (CM)
3.5	3	35.5	22.5
4	3.5	36	23
4.5	4	36.5	23.5
5	4.5	37.5	23.5
5.5	5	38	24
6	5.5	38.5	24
6.5	6	39	24.5
7	6	40	25
7.5	6.5	40.5	25.5
8	7	41	26
8.5	7.5	42	26.5
9	8	42.5	27
9.5	8.5	43	27.5
10	9	44	28
10.5	9.5	44.5	28.5
11	10	45	29
11.5	10.5	45.5	29.5
12	11	46	30
12.5	11.5	47	30.5
13	12	47.5	31
13.5	12.5	48	31.5
14	13	48.5	32
14.5	13.5	49	32.5
15	14	49.5	33

	CHEST	WAIST	HIP	HEIGHT
XXS	28.1"–31.5"	22.5"–25.5"	28.5"–31.5"	< 5'7"
XS	31.5"–35"	25.5"–29"	31.5"–35"	5'7"–6'0"
S	35"–37.5"	29"–32"	35"–37.5"	5'7"–6'0"
M	37.5"–41"	32"–35"	37.5"–41"	5'7"–6'0"
L	41"–44"	35"–38"	41"–44"	5'7"–6'0"
XL	44"–48.5"	38"–43"	44"–47"	5'7"–6'0"
2XL	48.5"–53.5"	43"–47.5"	47"–50.5"	5'7"–6'0"

1. Chest
Measure around the fullest part of the chest, keeping the tape parallel to the floor.

2. Waist
Measure around the narrowest part (typically where your body bends side to side), keeping the tape parallel to the floor.

3. Hip
Stand with feet together and measure around the fullest part of the hip, keeping the tape parallel to the floor.

	WAIST	HIP	HEIGHT
XXS	22.5"–25.5"	28.5"–31.5"	< 5'7"
XS	25.5"–29"	31.5"–35"	5'7"–6'0"
S	29"–32"	35"–37.5"	5'7"–6'0"
M	32"–35"	37.5"–41"	5'7"–6'0"
L	35"–38"	41"–44"	5'7"–6'0"
XL	38"–43"	44"–47"	5'7"–6'0"
2XL	43"–47.5"	47"–50.5"	5'7"–6'0"

1. Waist
Measure around the narrowest part (typically where your body bends side to side), keeping the tape parallel to the floor.

2. Hip
Stand with feet together and measure around the fullest part of the hip, keeping the tape parallel to the floor.

Women's

US	UK	EU	JP (CM)
4	1.5	34.5	21
4.5	2	35	21.5
5	2.5	35.5	22
5.5	3	36	22.5
6	3.5	36.5	23
6.5	4	37.5	23.5
7	4.5	38	24
7.5	5	38.5	24.5
8	5.5	39	25
8.5	6	40	25.5
9	6.5	40.5	26
9.5	7	41	26.5
10	7.5	42	27
10.5	8	42.5	27.5
11	8.5	43	28
11.5	9	44	28.5
12	9.5	44.5	29
12.5	10	45	29.5
13	10.5	45.5	30
13.5	11	46	30.5
14	11.5	47	31

	BUST	WAIST	HIP
XXS	27.5"–29.5"	21.25"–23.5"	30.5"–33"
XS	29.5"–32.5"	23.5"–26"	33"–33.5"
S	32.5"–35.5"	26"–29"	35.5"–38.5"
M	35.5"–38"	29"–31.5"	38.5"–41"
L	38"–41"	31.5"–34.5"	41"–44"
XL	41"–44.5"	34.5"–38.5"	44"–47"
2XL	44.5"–48.5"	38.5"–42.5"	47"–50"

1. Bust
Measure around the fullest part of your bust, keeping the tape measure horizontal.

2. Waist
Measure around the narrowest part (typically where your body bends side to side), keeping the tape parallel to the floor.

3. Hip
Stand with feet together and measure around the fullest part of the hip, keeping the tape parallel to the floor.

	WAIST	HIP	HEIGHT
XXS	21.25"–23.5"	30.5"–33"	5'4"–5'8"
XS	23.5"–26"	33"–35.5"	5'4"–5'8"
S	26"–29"	35.5"–38.5"	5'4"–5'8"
M	29"–31.5"	38.5"–41"	5'4"–5'8"
L	31.5"–34.5"	41"–44"	5'4"–5'8"
XL	34.5"–38.5"	44"–47"	5'4"–5'8"
2XL	38.5"–42.5"	47"–50"	5'4"–5'8"

1. Waist
Measure around the narrowest part (typically where your body bends side to side), keeping the tape parallel to the floor.

2. Hip
Stand with feet together and measure around the fullest part of the hip, keeping the tape parallel to the floor.

Sources
https://www.nike.com/ca/size-fit/mens-footwear

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MORE SIZES COMING SOON!

Fine-tuned for speed, the Alphafly 3 Premium helps push you beyond what you thought possible. Three innovative technologies power your run: A double dose of Air Zoom units helps launch you into your next step; a full-length carbon fiber plate helps propel you forward with ease; and a heel-to-toe ZoomX foam midsole helps keep you fresh as you conquer the iconic Ekiden.

Product Highlights

Fuel the Fire: This edition draws color inspiration from the Japanese flag, ready to usher in the next centennial of this New Year's relay race.
Energy Return for the Ekiden: Two forefoot Air Zoom units combine with ZoomX foam to store and return the energy back to you, powering every step.
Fire Underfoot: A full-length carbon fiber plate delivers a propulsive sensation that helps you smoothly transition through every stride and tackle turns with confidence.
What's New About the Alphafly 3? The Alphafly 3 is our lightest Alphafly ever, featuring a slightly wider carbon fiber plate for increased stability, a fully connected ZoomX foam midsole for smoother transitions and an all-new Atomknit upper designed for improved multidirectional containment and breathability.
Notched laces offer a secure but soft lace-up.
Integrated knit tongue with lofted padding helps alleviate lace pressure.

Product Details:

Weight: 218g / 7.6oz (Men's size 10)
Stack: 40mm / 32mm
Heel Drop: 8mm
Fit: True to Size
Category: Performance, Carbon
The stack heights and materials in the shoe adhere to the guidelines set by World Athletics.