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

EFFORTLESS REUSABILITY - Simply rinse with hot water and detergent, dry, and reuse—eco-friendly and cost-effective.
PROUDLY MADE IN THE USA - Crafted with premium materials ensuring durability and quality you can trust.
MAXIMIZED CLEANING CAPACITY - Advanced porous foam holds more solution for faster, safer washes without constant reloading.
REVOLUTIONARY CROSS CUT CHANNELS - Dual-sided pattern traps dirt and grime while protecting your paint from marring.
ORIGINAL BIG RED SPONGE NO GIMMICKS - Outshines imitators with 10+ sq in more cleaning surface for pro-level results.

The Optimum Big Red Sponge is a professional-grade car wash tool featuring a unique dual-sided cross-cut design that traps dirt while minimizing paint marring. With over 10 square inches more surface area than competitors and advanced porous foam, it holds more cleaning solution for efficient, safe washing. Reusable and easy to maintain, this USA-made sponge is a must-have for detailers seeking superior performance and durability.

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€ 64.30

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Excellent communication throughout the order process. Product is perfect.

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The product quality is outstanding. Exactly what I needed for my work.

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Manufacturer	OPT
Brand	Optimum Polymer Technologies, Inc.
Model	Big Red Sponge
Product Dimensions	17.78 x 12.7 x 7.62 cm; 6.8 g
Item model number	22516
Manufacturer Part Number	22516
Special Features	Reduced Marring, Reusable
Item Weight	6.8 g

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

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