---

UPT Sigma II 12 Tandem Skydiving Container with Passenger Harness. United Parachute Technologies is the king of the skydiving industry.

SIGMA II
In the realm of engineering, “Sigma” signifies a culmination or solution to challenges.

UPT has proudly dubbed the latest tandem system Sigma II, embodying all they’ve learned about tandem equipment and its users. After extensive development and rigorous testing, the Sigma II Tandem system has emerged as its most robust and secure offering to date.

Your feedback guided UPT every step of the way. Featuring an exceptionally comfortable harness and an elevated free-fall position for instructors, alongside the student harness designed for maximum comfort—this setup is unmatched. With newly designed, military-grade ballistic leg pads, VGH articulating harness, retractable release handles, easy component replacement options, and UPT’s originally patented Disc Release system matched with the all new patented TB Pulley Release design—UPT is setting new and even higher standards in safety and convenience.

Constructed for durability and fatigue reduction, the Sigma II feels more like a sport container than mere work gear.

ENHANCED
For 24 years, the Sigma tandem system has set the standard for innovation while evolving the skydiving and aerospace industries. Exploring the limits of what is possible, UPT has meticulously upgraded every feature based on your needs and feedback along with over 6 years of testing and data from our military Tandem Heavy System developments. Safety, durability, and comfort are paramount, making it uniquely inspired by rigorous military and celestial conditions. Now with a sleek new design, the SIGMA II is ready to tackle even the most demanding environments.

SIZES
The Sigma II is now available in two container sizes (12 or 13).
The Sigma II 12 fits the SG340 main with either the SR340 or SR370 reserve, similar to the Micro Sigma.
The Sigma II 13 fits either the SG370 or SG395 main and SR370 reserve parachute similar to the Sigma
The VR 360 reserve will fit both container sizes

MCS | MODULAR COMFORT SYSTEM
UPT’s newly designed optional MCS Back Pad ensures maximum comfort and reduced fatigue for the tandem instructor. With Military testing input, we can confirm that the Sigma II Tandem System is ready to go to work. Experience enhanced ergonomic support with redesigned lumbar support and comfort padding. This removable option maximizes instructor comfort and facilitates easy maintenance.

ALD | ANTI-LINE DUMP MAIN D-BAG
UPT’s newly designed optional Anti-Line Dump Main Deployment Bag evenly distributes line payout during deployment sequence. With significant HEAVY weight testing and packing analysis, UPT finds this deployment bag to be an excellent enhancement reducing parachute wear and maximizing system protection.

Recommended for high elevation drop zones enduring high density altitude deployments.

Standard Features
Your brand new Sigma II (12 or 13) Tandem system comes loaded features, including: adjustable student harness, magnetic riser covers, adjustable and articulating container harness, double wide ballistic covered leg pads, retractable release handles, spectra reserve ripcord, reserve pin window, and our Skyhook RSL.

• TB Pulley Disc Release System
• Redesigned Adjustable Harness
• Articulating VGH Leg Pads and Retractable Release Handles
• AAD and Reserve Inspection Windows
• Spectra Reserve Ripcord

Note: All Sigma and Micro Sigma components are compatible with the Sigma II, excluding the reserve ripcord, RSL lanyard and recoil system.

UPT with Bill Booth at the helm is known for the 3-ring system, tandem skydiving, magnets, spectra reserve ripcord and the Skyhook.

In engineering, the word Sigma means a “Summation” or “Answer” to the problem. UPT chose to name their tandem rig Sigma, because it represents a “Summation” of everything they have learned about tandem equipment, and the people who use it, since 1984.

Unlike all other tandem systems, where the drogue was simply tacked onto an existing design, the Sigma was built from the ground up, as a drogue deployed system. Contained within its design is an “answer” to every container related problem UPT has observed.

Unique highlights and features of the Micro Sigma Tandem System include:

• Comfortable Head High Position
• Patented Disc Release Handles
• Retractable Release Handles
• Superior Pin Protection
• User-friendly Component Replacement

Sigma II Advantage: The Parts

A special safety pin prevents premature container openings if release handles are accidentally pulled prior to drogue deployment. This pin is automatically extracted once the drogue is deployed, thus arming the drogue release handles

A diagram on the inside main pin flap makes it easy for anyone to do a pin check while inspecting the new disc drogue release.

Magnetic Riser Covers

Super clean design of the new drogue pouch eliminates the need for velcro or tuck tabs. Packing is quicker and trouble free.

Drogue

The drogue bridle is completely covered. But even if you accidentally snag the drogue bridle, it will not open the main container.

Both left & right handles for drogue release.

Both drogue release handles are retractable. Pull either one, pull both simultaneously, and let them go. They’ll retract right back to their original position.

The right drogue release handle is conveniently positioned on the upper right leg strap to simulate a BOC deployment for the student. Its permanent position eliminates the worry of relocating it on each jump, or the possibility of being accidentally dislodged.

Skyhook RSL

The Automatic Release Lanyard is now incorporated into the RSL. If the RSL side riser breaks, or releases by itself for any reason, this feature will automatically release the other riser, thus preventing a main-reserve entanglement.

The RSL, with its Tru-Lok pin, is designed so that only a hard, straight-up pull will cause a left side cutaway and reserve activation, greatly reducing the chance of accidental functioning..

UPT believes that you should be able to activate your reserve with either hand. So the RSL is designed to also function as a right hand reserve ripcord, in the event that the standard left hand reserve ripcord cannot be reached, because of injury or student interference.

Disc Release: How It Works

Note: Some photos are shown without disc covers however all discs come with a disc cover now.

The drogue is connected at the center of the main container, and held in place by the main container closing system.

This yields a head high droguefall position, and makes our of sequence deployments virtually impossible.

When either ripcord is pulled, the closing loop slips through a series of “D” rings, allowing the container to open and release the drogue disc. The drogue then partially collapses to the size of a normal pilot chute, and deploys the main canopy.

Because the normal loop-through-grommet main container closing system also holds and releases the drogue, this is no need for the addition of a three-ring drogue release. The system is far less complex and therefore much more reliable.

The Sigma II 12 can hold the following parachutes. Main Canopy: Sigma 340. Reserve Canopy: VR360.

After the order is placed we’ll contact you to review your order, make any necessary changes and give you the final price including options and shipping before submitting the order for production

Contact us if you’re having any issues with the ordering process and we’ll gladly walk you through it.