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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WILSON Championship Tennis Balls

Product ID: 1052082

Details

Age Range (Description)
Adult
Brand
WILSON
Color
Yellow
Item Weight
0.02 Kilograms
Material
Rubber

🎾USTA & ITF Approved

🏆Official Ball of Grand Slams

🛡️Dura-Weave Felt Durability

€ 11.54

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Sold byAmazon AustriaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎾 Elevate your game with the ball that champions trust!

BUILT TO LAST - Exclusive Dura-Weave felt offers superior durability, perfect for intense hard court matches.
GRAND SLAM PROVEN - Official ball of the US Open, Australian Open, and NCAA Tennis – play like the pros.
CERTIFIED FOR CHAMPIONS - USTA and ITF approved for tournament-level play, ensuring you compete with the best.
EXTRA DUTY FOR HARD COURTS - Designed specifically for longer play on hard surfaces, maintaining performance match after match.
RESEALABLE CAN CONVENIENCE - Keeps your balls fresh and ready, so you never miss a beat on the court.

Wilson Championship Tennis Balls are USTA and ITF certified, featuring exclusive Dura-Weave felt for enhanced durability and performance on hard courts. As the official ball of major Grand Slam tournaments and NCAA Tennis, these extra duty balls deliver consistent play for all skill levels, packaged in a resealable can for optimal freshness.

Specifications

ASIN	B001FZCVTM
Age Range Description	Adult
Ball Type	tennis ball
Best Sellers Rank	#34 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #1 in Tennis Balls
Brand Name	WILSON
Color	Yellow
Construction Type	Woven
Customer Reviews	4.8 4.8 out of 5 stars (14,421)
Global Trade Identification Number	00026388010011
Item Diameter	6.54 Centimeters
Item Weight	0.02 Kilograms
League Name	Tennis
Manufacturer	Wilson
Manufacturer Part Number	FBA_WRT100101
Material Type	Rubber
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	3.0 Count

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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€ 11.54

Duties & taxes included

In stock

Sold byAmazon AustriaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Austria.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

View all Trustpilot reviews