Head to head
Wavemaster XXL vs BOB XL (2027): Surface Area or a Target to Hit?
XXL and BOB XL compared on training purpose, striking surface, height range, and which Century bag should be your only bag.

Century Wavemaster XXL Pro Training Bag vs Century BOB XL Body Opponent Bag: the specs, side by side
| Spec | Century Wavemaster XXL Pro Training Bag | Century BOB XL Body Opponent Bag |
|---|---|---|
| Filled weight | About 270 lb filled with sand or water (maker listing) | About 270 lb with base filled with sand or water |
| Base type | Round water or sand fill base, 28 in diameter | Round water or sand fill base, 24 in diameter |
| Height | Adjustable 52 to 69 in, bag section 18 in diameter | Adjustable 60-82 in total |
| Shell material | Vinyl cover over high density foam | Vinyl plastisol torso over foam, on a plastic stem |
CenturyCentury Wavemaster XXL Pro Training Bag
The biggest cylinder in the class: an 18 inch striking surface over a 28 inch base.
- Filled weight: About 270 lb filled with sand or water (maker listing)
- Base type: Round water or sand fill base, 28 in diameter
Sources: Century Wavemaster XXL product documentation, Amazon listing specifications
Check price on Amazonor add to your Amazon cart
CenturyCentury BOB XL Body Opponent Bag
A lifelike torso and head on a height adjustable stem, for target work a cylinder cannot do.
- Filled weight: About 270 lb with base filled with sand or water
- Base type: Round water or sand fill base, 24 in diameter
Sources: Century BOB XL product documentation, Amazon listing specifications
Check price on Amazonor add to your Amazon cartOur recommendation
Buy the XXL as your only bag: it covers boxing, kickboxing, and conditioning with the biggest surface and the widest base here. Buy the BOB XL when target accuracy and self defense work are the core of your training, ideally as a specialist tool. Same maker, same base philosophy, completely different training.
What you are hitting
A tall, wide foam cylinder against an anatomical torso and head. The cylinder rewards volume, angles, and movement. The torso rewards precision, shot selection, and realistic lines to chin and body. Your curriculum, not the spec sheet, picks the winner.
Height and range of work
The XXL is fixed at 69 inches with a low zone for kicks. The BOB XL adjusts from 60 to 82 inches but has no low kick zone. Tall users doing head work lean BOB; kickboxers lean XXL, and neither bag fully substitutes for the other.
Base and footprint
Both use round fill bases at about 270 lb filled. The XXL base is wider at 28 inches and is the stability leader. The BOB 24 inch base is slightly easier to place, and both demand a mat and a working circle to behave quietly.
Choose Century Wavemaster XXL Pro Training Bag if…
- Your training is boxing, kickboxing, or conditioning volume
- You throw low kicks and need foam below the waist
- This will be the only striking bag in the house
Choose Century BOB XL Body Opponent Bag if…
- Your training is self defense or traditional martial arts
- Accuracy to head and body targets drives your sessions
- Several heights of user will share the bag
FAQ
Freestanding Punching Bags questions, answered straight
Can I own both in one garage?
Many serious home gyms do, space permitting: the XXL as the conditioning station and the BOB as the technical station. If budget forces one, this comparison order stands: cylinder first for most training styles.
Which is quieter?
Similar bases make similar noise. The BOB torso strike is slightly softer in tone; the deciding factors remain a full sand fill and a dense mat under either bag.
Which suits a teenager training at home?
The BOB XL height range and target feedback suit coached teen training well. The XXL suits a teen in a boxing or kickboxing program. Match the bag to the program, not the age alone.