New Arrival

Mares Quantum

Product code: quant
  • Now £289.99
Item out of Stock | Usually dispatched within 24 hours


  • Monoplate backpack fits single or twin tanks
  • Swivel buckles and D-ring attachment on side lobe
  • SLS weight system
  • Visual confirmation of proper weight pouch insertion
  • Personalization label on weight pouches
  • Stretch cargo pockets
  • High flow rate inflator CONNECTION
  • Openings on side lobes for hose storage
  • Trim weight pockets
  • Optional BC attachment kit
  • Optional double tank strap for use with twin tanks up to 2 x 12L / 2 x 80cuft


Quantum is a completely new BCD by Mares. Based on a standard front adjustable design, it introduces many new ideas, not the least of which is a brand new integrated weight system, and boasts exceptional sturdiness and stability

Mares listened to its customers and the Quantum is the result of comments received over a long period of time.

A new bladder was designed, maintaining high lift capacity while allowing more mobility and freedom of movement by keeping a low profile on the side lobes.

The shoulder pads were the object of long experimentation in order to find the sturdiest yet most comfortable geometry, and are specific to each size of the BC.

Even the position of the stainless steel D-rings are optimized for ease of use instead of cosmetic appeal.

Talking about D-rings, a small technopolymer D-ring was added to the right shoulder at a 45° angle, allowing for the placement of a lanyard to a console, so that the latter hovers in the field of view of the diver when in a swimming position.

The sternum closure adjustment is on one side only, that of the corrugated hose.

This prevents a loose end of a strap getting in the way of the pull knob of the right shoulder dump valve.

On the sternum strap closure buckle we find the new low profile whistle.

These are all many small details that add up to great value.

 The connection between shoulder pads and straps take advantage of the Mares swiveling buckle, allowing for optimum routing of the strap.

This is further enhanced by the bottom end of the strap sewn onto a D-ring instead of directly onto the side lobe, so that the arc of the D-ring allows the strap to move in relation to the swivel buckle at the other end.

It doesn’t stop here. Mares introduced new materials as well.

For the first time on a BC, the outer panel of the cargo pockets is constructed of an elastic material: this allows for an increased capacity of the pocket, while keeping the profile very slim when not in use.

Stowing a mask, a marker buoy or anything else is now child’s play. 

The pockets also utilize an ergonomically routed heavy duty zipper for ease of use and durability.

The new material utilized in this bcd is supratek. Mares has been using supratek for wet suit kneepads for many years, and based on experience found it suitable for this purpose: elastic, tough and abrasion resistant.

To cosmetically finish the Quantum, microinjected labels give the side lobes a rich and elegant look.


Quantum is the first Mares BC to come with the new SLS integrated weight system.

This system is the outcome of years of hard work and is such a novelty that the examiners of the patent application had unusually positive reviews.

The SLS will get its own press release, but a few things pertinent to its implementation on the Quantum BC are worth mentioning.

A dedicated tunnel on the side lobes ensures easy insertion of the weight pouch.

A stiffener plate is built into the floor of the tunnel to keep the fabric stretched and reduce friction due to wrinkling when inserting the weight pouch.

The tunnel is separate from the cargo pocket so as to minimize any interference between the two.

The tunnel is of sufficient capacity to hold a full weight pouch and assures maximum stability.

In this context we should mention the trim weight pockets. These are placed on the back of the aircell, on either side of the backplate, which minimize rotational inertia, yet are still easy to access.


Quantum utilizes the new monoplate backplate, which works for single tanks and twin tanks alike (up to twin 12l / 80cuft via a dedicated set of two longer straps).

The monoplate structure is very strong yet lighter than the typical “two plate with aircell sandwiched in between” approach.

One unusual aspect of the backplate is that the rear surface, onto which the tank rests, is 5° off vertical: this is small enough to be hardly noticeable, but large enough to guarantee an additional 5cm / 2” of distance between the bottom of the tank and the diver: undesirable contact is avoided.

If used with twin tanks, the monoplate features two small winglets to retain the aircell away from the contact surface of the tanks, for an easier fit of the BC onto the tanks.

The backplate features a soft cover for comfort, but also for stability. 

The friction / grip elements on the side, minimize sideways movement across the body of the diver during a rotation.

Quantum features the new quick connector on the inflator, with three holes instead of the hole and bridge combination, for a 30% increase in flow rate.

Quantum is already certified according to the new EN1809:2014.

 It should be mentioned that the new camera attachment kit was developed at the same time as the Quantum, and that Quantum has 3 options to mount this kit: high on the left lobe (which is also a good place for a knife) and low on both the left and right lobes. The latter allow for easy hooking and unhooking of the extension pole without having to bend the elbow excessively. 











4,2 kg / 9.25 lb

4,2 kg / 9.25 lb

4,4 kg / 9.7lb

4,5 kg / 9.9 lb

4,6 kg / 10.1 lb


120 N

(12,2 kg / 27 lb)

135 N

(13,8 kg / 30.4 lb)

155 N

(15,8 kg / 34.9 lb)

170 N

(17,3 kg / 38.1 lb)

200 N

(20,5 kg / 45 lb)

In 1949, Ludovico Mares designed and manufactured his first masks and spearguns with one dream and purpose in mind: To share his unbridled passion for the sea and diving with the rest of the world. 
At its birth, Mares was just one small factory in Rapallo, but now, only 60 years later, the Italian based company dominates the scuba diving world, and is at the forefront of new and innovative dive technologies. 
Over the past six decades, Mares has come a long way, by achieving new goals, taking diving to new and extreme heights and depths. The
Mares name represents only the best in dive products.

Guided by this principle, Mares has become a worldwide leader in the manufacturing and distribution of state-of-the-art diving equipment, and continually sets new industry standards. 
The constant investment in innovation, the unceasing, patient research in the field of manufacturing materials and processes, combined with the expertise of our staff and a creative, professional approach grants Mares its leading position and makes our brand a synonym of quality, safety and reliability. 
The best of Mares is wrapped up in every product to
meet the needs of each single diver. 
Enjoy diving with advanced performance through superior technology: this is our mission.

Discover all that Mares has to offer: you will find a collection of new fantastic products where superior technology and emotion is at the core.

But this result wouldn’t have been possible without our undisputed love for the sea, an all-encompassing vocation rooted in the history of our legendary founder that is felt powerfully by everyone at Mares. 
Although we manufacture our products using state-of-the-art machinery and use the most sophisticated electronic equipment, the core of our business and the spark that makes everything happen is still the same today as it was 60 years ago: Passion.
Come and discover the Mares world, all you need to do is...
Just add water.


 Free UK Mainland Delivery on orders of £50.00 and above

Take advantage of our free UK Mainland delivery offer when you spend £ 50.00 or more*

1st Class and Parcelforce 48 Services will be free for UK Mainland postcodes ( Parcelforce 48 Excludes Highlands / Islands, Northern Ireland (Parcelforce) and Channel Islands

Parcelforce 24, and Special Delivery services are excluded from this offer

( *Weights & Cylinders excluded from offer)

We reserve the right to withdraw the offer at any time


UK Mainland Ist Class Royal Mail

Approx delivery time between 1 - 3 Days

Special Delivery

Next Working Day Before 1pm
Express Delivery Times

Special Delivery & Parcelforce 24 are Next Working Day ( Mon-Friday )
Saturday Guaranteed Delivery is available on request
Call 01642 486666 for a quote

Airmail Europe

Approx 2-10 Days Depending on destination
Parcelforce Euro Priority - Up to 25kg
If in doubt, just contact us and we can let you know a timescale
Depending on country, this service can take anywhere between 3 and 6 days on average

Returns Policy / Faulty Products

Denney Diving is committed to providing the highest quality products and service. However, on rare occasions products may be found to be faulty or defective. If any product is found to be faulty or have defects upon delivery, You will be entitled to a free of charge replacement or full refund (including postage fees incurred) within 30 days of receiving product. If a product is returned to us, and following the testing process, the product is found to be in good working order without defect or fault, we will return the product to you. All returns must first be authorized by either telephone or e-mail, after which you will be given a returns number which must be quoted with all returned goods. Any goods returned for either exchange or refund can only be dealt with after a authorization number has been issued.

Returning unsuitable or incorrectly sized goods

If a product you purchase from us turns out to be unsuitable or the incorrect size for you, we will provide a free of charge replacement or full refund, provided they are returned in a new & unused resalable condition within 7 working days of the date of receiving your order. When returning goods to us, the customer will incur any postage fees. If we arrange to collect the goods for you, the cost of our postage to do so will be deducted from the refund. Please note that we do not refund postage for unsuitable or incorrectly sized goods.

Cancellation Period

You may cancel your order within 7 working days to receive a full refund. To cancel all, or part of your order, You must first contact us by either telephone or e-mail, after which you will be given a returns number which must be quoted with all returned goods. A full refund will be provided within 7 working days of cancellation.

When returning goods to us, the customer will incur any postage fees. If we arrange to collect the goods for you, the cost of our postage to do so will be deducted from the refund.

General returns / faulty product information

We always aim to please, so if you are not entirely satisfied with your purchase- just give us a call 01642 486666 (calls charged at local rate), and we will do our utmost to help. Your statutory rights remain unaffected. For all Returns / Customer Support contact us on 01642 486666 (calls charged at local rate)

Order Processing

We try to dispatch most orders the same day if received before 4pm (Monday-Friday)

On the odd occasion we may run out of stock of certain products, but normally have more stock arriving every few days.

If a product ordered is out of stock, we will contact you asap to let you know of any shortage.

On certain occasions we may not be re-stocking / discontinuing an out of stock item ordered, and on this occasion we will contact you to let you know and either offer an alternative or cancel for a full refund.

If we have mistakenly under priced an Item, we will not be liable to supply that item to you at the stated price, provided that we notify you before we dispatch the item for you. In these circumstances, we will notify you with the correct price so you can decide wether you wish to cancel or continue with the item at the correct price

Please contact us for more information regarding Payment & Security

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