Each ball is marked a number: 1, 2, 3 or 4. what does this number mean? tia.

Typically, in any can of balls, you will see the manufacturers name (Penn in this case) and a number. If there are 3 balls in a can, all will have the same number. The reason for that is that if you remember your ball's numbre and the manufacturer, you can easily find it if the ball gets away into another court. That is really the only reason a ball is numbered. The number does not designate what type of a tennis ball it is. I hope that helps! Take care. David B.

If the tennis balls were transported by flight, will the air-pressure damage the balls (resulting in dead balls) ?

If the shape of the can does not change, the pressure inside the sealed can will remain consistent. The pressure on the outside of the can will not affect the inside. Temperature, however can affect the pressure. Higher temp, more pressure. Not sure how that will affect the balls.

Does it really take 2-5 weeks for delivery?

Should take less than one week-- 10 days at most.

Just confirming that these are 12 cans of balls (36balls in total)

COSTCO Warehouse sells 20 cans for $35.99 everyday prices for the exact same types of lower quality balls, can you provide a reason why anyone should buy here? THX

Penn Championship Tennis Balls Extra Duty Felt Pressurized Tennis Balls

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Description

🎾 Elevate your game with the ball that never quits!

BUILT TO LAST - Interlocked wool fibers deliver unmatched durability on hard and clay courts alike.
CENTURY OF INNOVATION - Backed by 100 years of testing, Penn Championship sets the gold standard in tennis balls.
USTA APPROVED EXCELLENCE - The official ball of USTA leagues—trusted by pros and enthusiasts nationwide.
GAME CHANGING CONSISTENCY - Controlled fiber release ensures an even nap and consistent bounce every match.
VERSATILE COURT COMPATIBILITY - Extra duty felt optimized for hard courts but performs flawlessly on all surfaces.

Penn Championship Tennis Balls are the #1 selling, USTA-approved extra duty balls designed for superior durability and consistent performance across all court types. Engineered with controlled fiber release and interlocked wool felt, they deliver a professional-grade feel and long-lasting playability trusted by players for over a century.

Specifications

ASIN	B0002JZEL4
Age Range Description	Adult
Best Sellers Rank	147,074 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 358 in Tennis Balls
Brand Name	Penn
Colour	Yellow
Construction Type	Stitched
Customer Reviews	4.7 4.7 out of 5 stars (18,246)
Global Trade Identification Number	00072489010177
Included Components	all
Item Diameter	2.57 Inches
Item Type Name	ball
Item Weight	227 g
League Name	USTA
Manufacturer	Penn
Manufacturer Part Number	5550
Material Type	Rubber
Model Number	5550
Number of Items	12
Size	3 Balls (Pack of 4)
Sport Type	Tennis
Stitching Type	Stitched
UPC	072489010177
Unit Count	12.0 count

Reviews

H**R

producto excelente

19.06.2025

秋**永

高い

25.01.2025

E**E

These balls are amazing. My Pug destroys tennis balls. She is still on the first 2 balls, as we tend to lose 1, and find it later. I have spent more on tennis balls for her, these definitely are the best.

20.02.2026

A**R

Good set of balls only that the sound produced when hitting the ball is more muffled as compared to other balls like US open.

6.12.2025

R**.

Chegou muito rápido e as bolas são ótimas para o nível em que jogo!

1.04.2026

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