DeMarini 2025 Whisper -10 Fastpitch Softball Bat

Parent SKU:WBD2544010

$349.99

$349.99 ~~$549.99~~

Sale

Eligible for free shipping on Canadian orders $150+.

Length/Weight: 33/23 31/21 32/22 33/23 34/24

You should be able to size this product without leaving SportsZone. Start with the physical measurement below, use the rule of thumb as a quick check, then match it to the chart. Manufacturer-specific numbers are used where reliable; SportsZone starting charts are clearly labelled where brands vary.

Rule of thumbLength from height and weight; drop from strength and league rules.If the player cannot control the bat one-handed, go lighter before going longer.

Sizes/options sold on this product

Length/Weight: 31/21, 32/22, 33/23, 34/24

01

Measure player height and weight

Use both measurements for bat length. A quick physical check: stand the bat vertically beside the player; the knob should reach around the centre of the palm.

Bat length by age

Age	Starting length
5–7	24–26"
8–9	26–28"
10	28–29"
11–12	30–31"
13–14	31–32"
15–16	32–33"
17+	34"

Bat length by height and weight

Weight	41–45"	46–48"	49–52"	53–56"	57–60"	61–64"	65–68"	69–72"	73"+
≤60 lb	27"	28"	29"	29"	—	—	—	—	—
61–70	27"	28"	29"	30"	30"	—	—	—	—
71–80	28"	28"	29"	30"	30"	31"	—	—	—
81–100	28"	29"	29–30"	30"	30–31"	31"	32"	—	—
101–120	29"	29"	30"	30"	31"	31"	32"	—	—
121–140	29"	29"	30"	30–31"	31"	32"	33"	33"	—
141–160	—	29"	30"	31"	31"	32"	33"	33"	33"
161–180	—	—	31"	31"	31–32"	32–33"	33"	33–34"	34"
180+	—	—	—	—	—	33"	33"	34"	34"

Then choose drop.Drop = bat length minus bat weight. League certification and the player's ability to control the barrel decide the final drop.

Availability:In stock · usually ships within 48 business hours

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THE GEAR BREAKDOWN

Know Before You Buy

The useful product info, organized to help you make a faster decision.

01 Overview

Overview

The DeMarini 2025 Whisper -10 is a balanced two-piece composite fastpitch bat built for hitters who want strong barrel response without giving up control. Its Amplified Gapped Wall barrel and Continuous Fiber Composite construction are designed to create a responsive hitting surface, while the Anomaly Connection helps manage vibration and transfer energy efficiently through contact. A trumpet-shaped 0.800-inch handle provides a solid, controlled feel.

02 Key Features

Key Features

01 Amplified Gapped Wall Barrel Inner and outer composite barrel walls are separated to create a highly responsive hitting surface.
02 Continuous Fiber Composite Long composite fibres support consistent barrel performance and durability.
03 Anomaly Connection System Two-piece connection helps dampen vibration while maintaining efficient energy transfer.
04 Anomaly End Cap Updated end cap supports barrel integrity and performance.
05 0.800-Inch Trumpet Handle Provides a stiffer, solid feel while helping reduce vibration.
06 Balanced Swing Weight Built for controlled bat speed and hard contact.

03 Specs

Specs

Brand: DeMarini
Model: Whisper
Model Year: 2025
Product Type: Fastpitch Softball Bat
Model / SKU: WBD2544010
Drop: -10
Construction: Two-piece composite
Barrel: Amplified Gapped Wall / Continuous Fiber Composite
Connection: Anomaly Connection System
End Cap: Anomaly End Cap
Handle: 0.800 in Trumpet Handle
Swing Feel: Balanced
Certifications: USA Softball (ASA), ISA, NSA, USSSA, WBSC
Current Shopify Sizes: 31/21, 32/22, 33/23, 34/24
Warranty: 1 year

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DeMarini 2025 Whisper -10 Fastpitch Softball Bat

Measure. Match. Choose.

Measure player height and weight

Bat length by age

Bat length by height and weight

Know Before You Buy

See the value before you choose.

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