The short answer on rubber vs urethane dumbbells: rubber costs less and protects your floor well, but some rubber (especially recycled rubber) smells for a while and scuffs over the years. Urethane has little to no smell and keeps its looks longer, but you pay more for it. TPU sits in between: it is a type of polyurethane that is softer and generally cheaper than cast urethane. This guide covers the coating, the head shape and the rack, using the dumbbells we actually stock so you can compare real prices.
Rubber vs urethane dumbbells: the materials
Every coated dumbbell is a steel or iron core with a protective shell molded around the head. The shell is what you smell, what hits your floor and what wears.
Rubber
Rubber is the most common and least expensive coating. David Kiesling, writing at Two Rep Cave, separates two kinds:
- Virgin rubber: made from new material. He says you should smell little or nothing, even up close.
- Recycled rubber: cheaper, and in his words it “always has an odor for a while” until it airs out in a large ventilated room.
He also notes that rubber degrades a little over the years and shows signs of use, which on a dumbbell is mostly cosmetic.
Urethane
Urethane (polyurethane) is the coating most commercial gyms pay extra for. In its review of a urethane round dumbbell, Garage Gym Reviews lists “little to no rubber smell” and better durability than rubber dumbbells as pros, and “more expensive than standard rubber dumbbells” as the main con. Kiesling describes urethane as odorless by nature, with any smell on a new set usually coming from factory oil you can wipe off.
TPU (thermoplastic polyurethane)
TPU is a polyurethane that can be melted and reshaped, which makes it more flexible and cheaper to produce. Cast polyurethane (CPU) is poured into a mold and hardens into a tougher shell. VERVE Fitness, a seller of CPU dumbbells, explains that TPU is softer than CPU and can wear faster, and that some brands label TPU simply as “PU.” Keep in mind that this is a seller’s comparison. The practical point: “urethane” on a listing can mean very different things, so check whether a set is cast urethane or TPU before you pay a cast urethane price.
What we carry: Tru Grit hex dumbbells
We stock two coated hex dumbbell lines from Tru Grit Fitness, both sold in pairs. We do not currently stock a cast urethane or round dumbbell, so if a commercial urethane set is a must for you, these are not that product.
- Hex Rubber Coated Dumbbells: pairs from 2.5 LB to 95 LB. Solid steel core, heads listed as oil- and grease-resistant thermal plastic rubber, textured chrome-plated handles. Handles are 25mm on pairs up to 10 LB and 35mm from 12.5 LB up. Tolerance listed as +/- 3%.
- Hex Elite TPU Rubber Dumbbells: pairs from 2.5 LB to 125 LB, including a 17.5 LB pair. Steel core, MIG welded handles, 25mm and 35mm handle diameters, tolerance +/- 3%. The listing describes the heads as oil- and grease-resistant thermoplastic rubber built to stand up to repeated impact, and lists a 3 year warranty on dumbbells.
One caution: both listings use similar “thermoplastic rubber” wording for the heads, so we cannot tell you from the listings alone how much the two coatings differ in odor or wear. The Elite line is the one Tru Grit names as TPU, it goes heavier, and it costs a little more per pair. If smell is your main concern, call us before ordering and we will check with the manufacturer.
Price per pair
Prices listed when we checked in October 2026:
| Pair | Hex Rubber Coated | Hex Elite TPU |
|---|---|---|
| 2.5 LB | $30.00 | $30.00 |
| 10 LB | $50.00 | $65.00 |
| 50 LB | $240.00 | $255.00 |
| 95 LB | $385.00 | $435.00 |
| 125 LB | Not offered | $590.00 |
Not sure which weights you need? Our guide to what weight dumbbells to buy covers that, so this article sticks to coating, shape and storage.
Hex dumbbells vs round dumbbells
Shape matters almost as much as coating for a home gym.
- Hex heads sit flat. They do not roll away between sets, they give a stable base for push-ups and renegade rows, and they rest securely on simple shelf racks. Tru Grit points to exactly this for movements like dumbbell snatches and the Devil’s press.
- Round heads are what you see in most commercial gyms and usually sit in saddle-style racks. The tradeoff is rolling: Garage Gym Reviews notes the round heads on the urethane set it reviewed are prone to rolling on floors.
For most home and garage gyms with a flat shelf rack, hex is the practical choice. Round dumbbells make more sense if you already own a saddle rack.
Dumbbell rack options
Dumbbells on the floor are a trip hazard and wear faster from being kicked around. We carry two Tru Grit racks:
| Rack | Holds | Dimensions | Listed price |
|---|---|---|---|
| A-Frame Dumbbell Rack RACK1001 | 10 dumbbells (5 pairs), up to 200 lb total | 14.25″ L x 13″ W x 26″ H | $124.99 |
| Dumbbell Weight Storage Rack RACK1000 | 3 angled shelves, no weight rating listed | 60″ x 48″ x 23.7″ | $275.99 |
The A-frame is built for rubber hex or neoprene hex dumbbells and fits a corner. Watch the 200 lb limit: five pairs at 20 LB or more add up fast, so it suits a light to moderate set. The 3-tier rack is commercial-grade steel with a powder coat and rubber foot pads, and it is the better fit for a full run of pairs. For wall and shelf layouts, see our garage gym storage ideas.
Do you need a bench?
A bench is what turns dumbbells into a full program (presses, rows, step-ups). The Adjustable Weight Power Fitness Bench BNCH1000 adjusts to 12 positions from flat to 85 degrees and was listed at $500.99 when we checked. For the rest of the setup, start with our home gym buying guide. If you are new to strength training or have an injury, check with your doctor before starting.
Frequently asked questions
Are TPU dumbbells the same as urethane dumbbells?
TPU is a type of polyurethane, but it is not the same as cast urethane. It is softer and cheaper to make, and sellers of cast urethane say it wears faster. Ask which one you are getting.
Why do new rubber dumbbells smell?
Recycled rubber usually has an odor until it airs out, while virgin rubber should smell little or not at all. Leaving new dumbbells in a ventilated space helps.
Are urethane dumbbells worth the extra cost for a home gym?
For most home gyms, no. Urethane pays off in busy commercial gyms where looks and heavy daily use matter. A rubber or TPU hex set on a rack is the more common home choice.
What are the best dumbbells for a home gym?
Hex heads that do not roll, a coating that protects your floor, and a rack sized for the pairs you own. Both Tru Grit hex lines meet that; the Elite TPU line goes heavier, up to 125 LB pairs.
Can I drop rubber coated dumbbells?
Coating protects floors from normal set-downs, but Tru Grit’s warranty excludes damage from dropping dumbbells from overhead or onto hard surfaces such as cement.
Questions about a specific pair or rack? Call us at 866-777-2590, Monday to Friday, 9AM to 6PM PST. Orders of $999 or more ship free by freight, which a full dumbbell set plus a rack can reach quickly.
