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MOI 75 Training Baseball

MOI 75 Training Baseball

Original price was: $50.00.Current price is: $15.00.

Color

Clear

Free worldwide shipping

Good quality

Special price, same day delivery

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Description

Train Spin That Plays. The MOI-75 is a spin-development training baseball built for pitchers who want to improve carry, spin efficiency, and feel at release. Designed with approximately 75% of the moment of inertia (MOI) of a regulation baseball, the MOI-75 is engineered to rotate easier during throwing drills, helping athletes train cleaner finger pressure and more efficient spin through release. If a pitcher gets around the baseball or loses direction through release, the ball tends to sail high — providing immediate feedback during catch play, flat grounds, and bullpen work. The result is a training tool that helps reinforce staying through the baseball and creating cleaner rotation out front. Built with a premium leather cover and specialized weighted core, the MOI-75 delivers authentic baseball feel while creating a unique training stimulus for modern pitching development. Ideal for pitchers focused on spin quality, carry, command, and overall throwing efficiency.

Additional information

Color	WHITE (0000)

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SIZE GUIDE

Footwear & Apparel Size Chart

Men's, women's and youth charts converted across US, Japan, UK and Europe. Apparel measurements are body measurements in inches. Open a section below.

Men's Footwear

Running & Volleyball

USA	Japan	UK	Europe
5	23.0	4	36.5
5.5	23.5	4.5	37
6	24.0	5	38
6.5	24.5	5.5	38.5
7	25.0	6	39
7.5	25.5	6.5	40
8	26.0	7	40.5
8.5	26.5	7.5	41
9	27.0	8	42
9.5	27.5	8.5	42.5
10	28.0	9	43
10.5	28.5	9.5	44
11	29.0	10	44.5
11.5	29.5	10.5	45
12	30.0	11	46
12.5	30.5	11.5	46.5
13	31.0	12	47
13.5	31.5	12.5	48
14	32.0	13	48.5
14.5	32.5	13.5	—
15	33.0	14	50
15.5	33.5	14.5	—
16	34.0	15	51
16.5	34.5	15.5	—
17	35.0	16	52.5

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Baseball

USA	Japan	UK	Europe
5	22.5	4	36.5
5.5	23.0	4.5	37
6	23.5	5	38
6.5	24.0	5.5	38.5
7	24.5	6	39
7.5	25.0	6.5	40
8	25.5	7	40.5
8.5	26.0	7.5	41
9	26.5	8	42
9.5	27.0	8.5	42.5
10	27.5	9	43
10.5	28.0	9.5	44
11	28.5	10	44.5
11.5	29.0	10.5	45
12	29.5	11	46
12.5	30.0	11.5	46.5
13	30.5	12	47
13.5	31.0	12.5	48
14	31.5	13	48.5
14.5	32.0	13.5	—
15	32.5	14	50
15.5	33.0	14.5	—
16	33.5	15	51
16.5	34.0	15.5	—
17	—	16	52.5

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The baseball chart sits half a size lower in Japan than the running and volleyball chart. A dash means that chart lists no size in that column for the row.

Women's Footwear

Running & Volleyball

USA	Japan	UK	Europe
4	20.5	1.5	33
4.5	21.0	2	34
5	21.5	2.5	34.5
5.5	22.0	3	35
6	22.5	3.5	36
6.5	23.0	4	36.5
7	23.5	4.5	37
7.5	24.0	5	38
8	24.5	5.5	38.5
8.5	25.0	6	39
9	25.5	6.5	40
9.5	26.0	7	40.5
10	26.5	7.5	41
10.5	27.0	8	42
11	27.5	8.5	42.5
11.5	28.0	9	43
12	28.5	9.5	44
12.5	29.0	10	44.5
13	29.5	10.5	45

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Softball

USA	Japan	UK	Europe
4	20.5	2	34
4.5	21.0	2.5	34.5
5	21.5	3	35
5.5	22.0	3.5	36
6	22.5	4	36.5
6.5	23.0	4.5	37
7	23.5	5	38
7.5	24.0	5.5	38.5
8	24.5	6	39
8.5	25.0	6.5	40
9	25.5	7	40.5
9.5	26.0	7.5	41
10	26.5	8	42
10.5	27.0	8.5	42.5
11	27.5	9	43
11.5	28.0	9.5	44
12	28.5	10	44.5
12.5	29.0	10.5	45
13	29.5	11	46

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The softball chart sits half a size higher in the UK and Europe than the running and volleyball chart.

Men's Apparel

Tops

US Size	Chest (in)	Waist (in)
XXS	N/A	N/A
XS	31–33	27–29
S	34–37	30–32
M	38–41	32–35
L	41–44	35–38
XL	44–48	38–43
XXL	48–52	43–47

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Bottoms

US Size	Hip (in)	Inseam (in)
XXS	N/A	N/A
XS	32–34	32
S	35–37	32.25
M	38–41	32.5
L	41–44	32.75
XL	44–47	33
XXL	47–50	33

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Women's Apparel

Tops

US Size	Chest (in)	Waist (in)	Hip (in)
XXS	28–29	22–23	32–33
XS	30–33	24–26	34–36
S	33–36	26–29	36–38
M	36–38	29–31	39–41
L	38–41	31–34	41–44
XL	41–44	34–38	44–47
XXL	44–48	38–42	47–50

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Bottoms

US Size	Waist (in)	Hip (in)	Inseam (in)
XXS	22–23	32–33	30.5
XS	24–26	34–36	31
S	26–29	36–38	31
M	29–31	39–41	31.5
L	31–34	41–44	31.5
XL	34–38	44–47	31.75
XXL	38–42	47–50	31.75

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Youth Boys

Tops

US Size	Numeric Size	Chest (in)	Waist (in)
YXXS	N/A	N/A	N/A
YXS	6–7	25.5–26.5	23.5–24.5
YS	8–9	26.5–27.5	24.5–25.5
YM	10–12	27.5–29.5	25.5–27
YL	14–16	29.5–32.5	27–28.5
YXL	18–20	32.5–35	28.5–30
YXXL	N/A	N/A	N/A

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Bottoms

US Size	Hip (in)	Height (in)
YXXS	N/A	N/A
YXS	26.5–27.5	48–51
YS	27.5–29.5	51–54
YM	29.5–31.5	54–59
YL	31.5–33.5	59–63
YXL	33.5–35.5	63–67
YXXL	N/A	N/A

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Youth Girls

Tops

US Size	Numeric Size	Chest (in)	Waist (in)
YXXS	N/A	N/A	N/A
YXS	6–7	25.5–27	23–24
YS	8–9	27–28.5	24–25
YM	10–12	28.5–30.5	25–26.5
YL	14–16	30.5–33	26.5–28
YXL	18–20	33–36	28–30
YXXL	N/A	N/A	N/A

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Bottoms

US Size	Hip (in)	Height (in)
YXXS	N/A	N/A
YXS	26.5–28.5	47–51
YS	28.5–30.5	51–54
YM	30.5–32.5	54–59
YL	32.5–34.5	59–63
YXL	34.5–36.5	63–67
YXXL	N/A	N/A

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These charts are based on body measurements and are intended for reference only. Sizes may vary between styles.

Technical details

Reduced MOI Design: Engineered at approximately 75% of the MOI of a regulation baseball for spin-focused throwing development.
Immediate Release Feedback: Miss underneath or around the baseball and the ball will tend to leak arm-side and high — helping reinforce staying through the baseball.
Regulation Baseball Feel: Comparable size and weight to a standard baseball with a premium leather exterior and specialized internal weighted construction.
Versatile Throwing Tool: Great for catch play, plyo routines, flat grounds, and bullpen sessions.
Made in Japan: Precision-built using premium materials and Mizuno craftsmanship.