I'm playing in Quito. Elevation 9300ft. Has anyone played them at an altitude like that?

Yes- in breckenridge CO- elevation quite high as well. The balls fly higher you go. Not the same as playing at sea level, for certain.

What number are they? 1, 2, 3 or 4?

I use them by the hundreds for tennis coaching. I never paid much attention to the numbers, but I opened 4 today and each had 1 can of each number.

Which is firmer, heavy duty or extra duty? I need these to put on my back and keep me from sleeping on it.

My cattle dog loves tennis balls! We have to buy the extra duty or he cracks them quickly. Hope this helps!

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Championship Tennis Balls

Product ID: 1052082

Details

Age Range (Description)
Adult
Brand
WILSON
Color
Yellow
Item Weight
0.02 kg
Material
Synthetic

🎾USTA & ITF Approved

🏆Official Ball of Grand Slams

🛡️Dura-Weave Felt Durability

₨526

Duties & taxes included

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Description

🎾 Elevate your game with the official ball of champions!

EXTRA DUTY DURABILITY - Engineered with exclusive Dura-Weave felt for longer-lasting bounce on hard courts.
CERTIFIED TOURNAMENT READY - USTA and ITF approved to elevate your competitive edge.
RESEALABLE CAN CONVENIENCE - Keeps your balls fresh and ready, reducing waste and maintaining peak performance.
GRAND SLAM GRADE PERFORMANCE - Trusted by US Open & Australian Open pros for unmatched play.
VERSATILE PLAY FOR ALL LEVELS - Perfect for both intense tournaments and casual matches—join the winning league.

Wilson Championship Tennis Balls are the official balls of major Grand Slam tournaments and NCAA tennis, featuring exclusive Dura-Weave felt for superior durability and performance on hard courts. USTA and ITF certified, these extra duty balls come in a resealable can to maintain freshness, making them the top choice for players at every level.

Specifications

ASIN	B001FZCVTM
Age Range Description	Adult
Ball Type	tennis ball
Best Sellers Rank	#25 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #1 in Tennis Balls
Brand Name	WILSON
Color	Yellow
Construction Type	Woven
Core Material	Rubber
Customer Reviews	4.8 4.8 out of 5 stars (15,214)
Global Trade Identification Number	00026388010011
Item Diameter	6.54 centimeters
Item Weight	0.02 kg
League Name	Tennis
Manufacturer	Wilson
Manufacturer Part Number	FBA_WRT100101
Material Type	Synthetic
Model Number	WRT100101
Number of Items	1
Number of Packs	1
Size	Single Can (3 Balls)
Sport Type	Tennis
Stitching Type	Woven
Team Name	tennis
Tennis Ball Duty Rating	Extra Duty
UPC	026388010011
Unit Count	3 Count

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TrustScore 4.5 | 7,300+ reviews

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The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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