no sure but its a softer sponge so i would say not high density

Is there a particular way to wash this? Mine has black stains on it. Can I machine wash it?

To get rid of black stains on the Big Red Sponge, spray some Optimum Power Clean on it, rub it in lightly, then rinse it out thoroughly, you can also use Optimum FerreX on the sponge, spray it on, let it sit for a minute, then rinse it out thoroughly. The FerreX will break down any contamination in the sponge and restore it. Store the sponge in a bucket of fresh ONR at 256:1 or .5oz of ONR per gallon of water, put an air tight lid on it and you're good to go.

Is it safe to use with 1 bucket only?

Yes. That's how it was intended to be used. Keep a grit guard or two in your bucket. Having said that, I would have two buckets, each with their own sponge. One for wheels and one for paint. I was using one bucket but it gets dirty after a few washes. Remember to apply the minimum amount of pressure on the sponge. Just enough to maneuver around the car. I can do my whole car in about 30 mins. You also need to know how to dry your car and a good high gsm drying towel.

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Optimum Big Red Sponge – The Original Made in USA Crosscut Rinseless Sponge - Safe for All Paint Types, Use for No Rinse Vehicle Wash and Car Wash Soap

Product ID: 57957169

Details

Brand
Optimum Inc.
Color
Red
Included Components
Big Red Car
Item Package Quantity
1
Material
Foam
Model Name
Big Red Sponge

💧Advanced porous foam for max absorption

🔴Dual-sided cross-cut dirt channels

🧽10+ sq in larger surface area

$U3140

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Description

🔴 Elevate your car care game with the original Big Red Sponge — clean smarter, not harder!

MAX SOLUTION RETENTION - Porous foam holds more cleaning solution so you cover larger areas without constant reloading.
PROUDLY MADE IN THE USA - Crafted with premium materials to ensure durability and professional-grade performance.
UNMATCHED CLEANING POWER - Original Big Red Sponge offers 10+ sq in more surface area than competitors for faster washes.
REUSABLE EASY TO MAINTAIN - Simply rinse with hot water and detergent, then air dry—ready for your next detail session.
DIRT TRAPPING CROSS CUT DESIGN - Dual-sided channels lift grime while protecting your paint from scratches and swirl marks.

The Optimum Big Red Sponge is a professional-grade, reusable car wash sponge made in the USA. Featuring a patented dual-sided cross-cut design and advanced porous foam, it traps dirt effectively while minimizing paint marring. With over 10 square inches more surface area than competitors, it holds more cleaning solution for efficient rinseless or traditional washes. Ideal for cars, motorcycles, boats, and RVs, it’s easy to maintain and built to last, making it a must-have for detail-oriented enthusiasts.

Specifications

ASIN	B078DPCYFV
Best Sellers Rank	#245,795 in Automotive ( See Top 100 in Automotive ) #205 in Car Washing Sponges & Mitts
Brand Name	Optimum Polymer Technologies, Inc.
Color	Red
Customer Reviews	4.6 4.6 out of 5 stars (1,385)
Global Trade Identification Number	00812779022516
Included Components	Big Red Car Wash Sponge
Item Dimensions L x W x Thickness	7"L x 5"W x 3"Th
Item Type Name	Optimum Red Big Sponge
Item Weight	9.07 g
Manufacturer	OPT
Manufacturer Warranty Description	Contact manufacturer.
Material Type	Foam
Model Name	Big Red Sponge
Number of Items	1
Other Special Features of the Product	Reduced Marring, Reusable
Package Quantity	1
Recommended Uses For Product	Automotive Surfaces
Surface Recommendation	Automotive Surfaces
UPC	647409554002 812779023193 812779022516
Unit Count	1 Count

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$U3140

Duties & taxes included

In stock

Sold byAmazon UruguayDelivered 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 Uruguay.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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2 weeks ago

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

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