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

EC$28

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Sold byAmazon GrenadaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎾 Elevate your game with the ball that champions trust!

HARD COURT HERO - Extra Duty rating optimized for extended play on all hard court surfaces.
ULTIMATE DURABILITY - Exclusive Dura-Weave felt ensures longer-lasting bounce and wear resistance.
CERTIFIED EXCELLENCE - USTA and ITF approved for tournament-grade reliability and consistency.
GRAND SLAM PERFORMANCE - Trusted official ball of US Open & Australian Open for pro-level play.
RESEALABLE CAN CONVENIENCE - Keeps balls fresh and ready, preserving peak performance between matches.

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 ideal for both competitive and recreational players seeking consistent, professional-grade play.

Specifications

ASIN	B001FZCVTM
Age Range Description	Adult
Ball Type	tennis ball
Best Sellers Rank	#30 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 (14,556)
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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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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How is product pricing calculated?+

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

Ayesha M.

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

5 days ago

Fatima A.

Best international shipping I've ever tried. Worth every penny!

3 days ago

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EC$28

Duties & taxes included

In stock

Sold byAmazon GrenadaDelivered 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 Grenada.

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

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

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