but it is actually a solid rubber

Heavy duty and solid rubber construction.

They are a very durable hard rubber , the handle makes them much easier to carry to where you will use them.

The weight is perfect and I know the product will last as it is solid rubber.

Nice weight blocks, solid rubber

They do have a very strong rubber odor so allow them to sit outside for a few days if you using them in your garage.

Good, inexpensive rubber compound chocks.

Very sturdy and hard rubber doesn’t slip as much as cheaper plastic ones

These are really nice heavy duty rubber chocks.

Solid Rubber Heavy Duty Black Wheel Chock are not "lighgtweights"

Slight rubber smell but really not bad

Also, kind of a greasy rubber (which I'm sure a bit of dust/dirt will fix).

Made out of very solid, grippy rubber.

Shape conforms to tire, hard rubber material.

I like that it was made if solid rubber, i just hope it can take the weight of a semi, will edit my review if it does not, but so far it function as intended to

The hard plastic chocks will have a difficult time keeping traction on smooth concrete, so rubber would be more appropriate.

They are heavy solid rubber

The heavy rubber is useful that it doesn't skid off the surface

These are solid rubber

Best of all doesn'thave a strong rubber smell.

Solid, dense rubber, they more than met my expectations.

Personally, I find these chocks to be favorable when compared to other heavy-duty rubber chocks I've "smelled".

Smells like very strong rubber, works good as its intended purpose.

Great product solid rubber and grips ground great when using behind car while care is on ramps in the front

Solid, dense rubber, they more than met my expectations.

Best of all doesn'thave a strong rubber smell.

:(The Solid Rubber Heavy Duty Chock became the perfect solution for my needs

Solid rubber will not ship on concrete or pavement and can withstand tons of pressure so they will not break under the weight of my truck.

After all, it is Rubber!Great grip even on sloped driveway.

Solid rubber chick with tread on one side to prevent slippage

Easy to use and very sturdy rubber.

They are made of durable, "heavyweight" rubber material and work great for securing my 16 ft.

Heavy duty solid rubber chocks

Perfect compact size of solid rubber to secure any small to medium wheeled vehicle

solid rubber wedges

Slight rubber smell but really not bad

They do have a strong rubber

They're rubber tire chalks that smell a bit like rubber

Rubber grabs the floor well.

These are solid rubber and do what they need to

These are solid & heavy rubber

They are heavy SOLID RUBBER!

Very strong rubber odor, yuk

They’re heavy, solid rubber

Very durable rubber and grip the

Rubber smell.

Hard rubber seems to

They also have a very strong rubber smell

The orange chocks are for a trailer/large-vehicle, and way too big for our Mazda 3.Recommendations: When considering wheel chocks, you have two material choices: 1) hard plastic, or 2) rubber (or a hybrid of hard plastic with rubber feet).

They are everything I hoped for, solid rubber chocks and do not slip/slide

They are a very durable hard rubber , the handle makes them much easier to carry to where you will use them.

Little rubber odor, but that is to be expected

Great product solid rubber and grips ground great when using behind car while care is on ramps in the front

Works great really dense rubber

As others have said, these have a very strong rubber odor

Because it is made of solid rubber, it has really good grip of both the tire and the ground

Some complained about a strong rubber smell (it does go away

I was expecting a lighter plastic, but it's a nice, solid rubber.

They work as intended but the rubber off-gases a great deal

Serious rubber smell

these are quite heavy for their size; solid rubber with great tread molded into them

Hoping the strong rubber odor lessens over the winter months.

Nice quality rubber , it works perfectly on my tiled garage floor

Hard rubber body creates strong grip which making accidental damage a low likelihood

They have grips and its a hard rubber material to prevent sliding

and I would say probably solid rubber by the weight

Good solid rubber stoppers.

Nice heavy duty, solid rubber chocks

Works great but smells bad, it had a very bad rubber smell for weeks before it was gone.

Very strong rubber odor, yuk

Solid ,moderately heavy, pliable rubber units

solid rubber wedges

Great thick rubber should serve there purpose for a long time

Solid rubber blocks are great and work very well

These are solid rubber, with a good grip

and i dont believe they would have stopped the camper from rolling, they would have just broke, but these are nice rubber and heavy duty enough for me to not worry about the camper rolling away.

Chalk it up to good rubber...these chocks are better than blocks and not nearly as heavy as rocks

These solid rubber chocks are heavyweight

Works great really dense rubber