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 Polymer Technologies, Inc. Opt 22516 Optimum Big Red Sponge, 1 Pack

Product ID: 259694867

Details

Brand
Optimum Inc.
Colour
red
Material
Foam
Recommended uses for product
Automotive
Surface recommendation
car paint

💧High-absorbency porous foam

🔴Dual-sided cross-cut design

🧽10+ sq in extra surface area

MX$2250

Duties & taxes included

In stock

Sold byAmazon MexicoDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🧼 Elevate your car care game with the original Big Red Sponge — because your ride deserves the best!

DURABLE REUSABLE - Easily rinses clean and dries fast for countless premium uses
DIRT TRAPPING INNOVATION - Cross-cut channels lift grime while protecting paint from scratches
PROUDLY USA MADE QUALITY - Crafted with top materials ensuring reliability and performance
UNMATCHED COVERAGE POWER - More than 10 sq in larger than competitors for faster washes
MAXIMIZED CLEANING EFFICIENCY - Advanced porous foam holds more soap for extended wash sessions

The Optimum Big Red Sponge is a professional-grade car wash tool featuring a uniquely large surface area, a dual-sided cross-cut design to trap dirt without scratching, and advanced porous foam that holds more cleaning solution for efficient, safe washes. Durable and reusable, it’s proudly made in the USA to deliver consistent, high-quality performance for automotive detailing enthusiasts.

Specifications

ASIN	B078DPCYFV
Best Sellers Rank	#29,651 in Automotive ( See Top 100 in Automotive ) #80 in Automotive Sponges
Brand Name	Optimum Polymer Technologies, Inc.
Color	red
Country of Publication	China
Customer Reviews	4.6 4.6 out of 5 stars (1,326)
Global Trade Identification Number	00812779022516
Included Components	Optimum Big Red Sponge
Item Dimensions L x W x Thickness	17.8L x 12.7W x 7.6Th centimeters
Item Type Name	Optimum Big Red Sponge
Item Weight	7 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	car paint surfaces
UPC	647409554002 812779023193 812779022516
Unit Count	1.0 Count

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