The 50 gram PIBAL Balloon can carry a lightweight radiosonde in various conditions. These balloons can carry small instruments that determine cloud height, wind speed, wind direction, RH, temperature and pressure. 

The 100 gram PIBAL Balloon is available in black, red and natural color and can carry a lightweight radiosonde in various conditions. These balloons can carry small instruments that determine cloud height, wind speed, wind direction, RH, temperature and pressure. 
KCI-100N (NSN: 6660-00-663-8154)
KCI-100R (NSN: 6660-00-151-7772)

KCI-100B (NSN: 6660-00-151-7773)

Our 150g balloon is a popular choice for lightweight radiosondes. Users should expect a burst altitude between 45,000 to 55,000 feet.

Our 200g balloon is a popular choice for lightweight radiosondes. Users should expect a burst altitude between 50,000 to 60,000 feet.

When properly launched, our 300g balloon with a 1-2lb payload will reach an estimated 63,000- 73,000 ft (19202-22250 m) burst altitude.

In 2009, engineering students from MIT conducted "Project Icarus," launching a 350g Kaymont balloon with a photographic payload to 93,000 feet. The success of their project on a $150 budget paved the way for low cost near-space photography, which continues to this day with ever more advanced payloads. When properly launched, our 350g balloon with a 1-2lb payload will reach an estimated 68,000- 78,000 ft (20726- 23774 m) burst altitude.

The Kaymont 600g is an excellent intermediate sized balloon, and we commonly recommended this size for education and training. Before launching balloons larger than this, we suggest users familiarize themselves with the safe handling, inflation, payload attachment and tie-off procedures that are critical to successful weather balloon launches. When properly launched, our 600g balloon with a 2lb payload will reach an estimated 82,000- 92,000 ft (24993- 28041 m) burst altitude.

These balloons are recommended for individuals or groups who have experience in high altitude balloon launches. Balloons are ideally inflated with a target ascent rate of approximately 5 meters per second. When properly launched, our 800g balloon with a 2-4lb payload will reach an estimated 90,000- 100,000 ft (27432- 30480 m) burst altitude.

The 1000 gram balloon is the workhorse for gathering upper air data before US Space Force test ranges on both the East and West coast. Balloons are ideally inflated with a target ascent rate of approximately 5 meters per second. When properly launched, our 1000g balloon with a 2-4lb payload will reach an estimated 95,000- 105,000 ft (28956- 32200 m) burst altitude.

The 1200 gram balloon sets the standard for ozone research across the globe. Balloons are ideally inflated with a target ascent rate of approximately 5 meters per second. When properly launched, our 1200g balloon with a 2-4lb payload will reach an estimated 100,000- 110,000 ft (30480- 33528 m) burst altitude.

The 1500 gram balloon is an extremely popular choice for high altitude photography. With a 4 to 8 pound payload, users can expect to consistently reach over 100,000 ft. When launching this type balloon, and payloads of this weight, it is assumed that the operators have prior launch experience and are familiar with FAA requirements. Balloons are ideally inflated with a target ascent rate of 5 meters per second. When properly launched, our 1500g balloon with a 4-8lb payload will reach an estimated 105,000- 115,000 ft (32004- 35052 m) burst altitude.

Introduced in 2021, the 1600 gram balloon fills a unique request from high altitude ballooning enthusiasts. The 1600g balloon offers a slight competitive edge over the 1500g balloon, when every foot of altitude counts. When launching this type of balloon, and payloads of this weight, it is assumed that the operators have prior launch experience and are familiar with FAA requirements. Balloons are ideally inflated with a target ascent rate of 5 meters per second. When properly launched, our 1600g balloon with a 4-8lb payload will reach an estimated 105,000- 115,000 ft (32004- 35052 m) burst altitude.

Introduced in 2021, the 1800 gram balloon fills the gap between our 1600 and 2000 gram balloons. When launching this type balloon, and payloads of this weight, it is assumed that the operators have prior launch experience and are familiar with FAA requirements. Balloons are ideally inflated with a target ascent rate of 5 meters per second. When properly launched, our 1800g balloon with a 4-8lb payload will reach an estimated 107,000- 117,000 ft (32613- 35661 m) burst altitude.

The 2000 gram balloon is designed for heavier payloads, with a reinforced 5cm neck and expanded lifting capacity. These balloons are made to lift heavier payloads to altitudes reaching over 110,000 feet. Balloons are ideally inflated with a target ascent rate of 5 meters per second. When properly launched, our 2000g balloon with a 4-8lb payload will reach an estimated 108,000- 118,000 ft (32918- 35966 m) burst altitude.

The 3000 gram balloon is the ultimate workhorse for heavy payloads, and is responsible for setting multiple world records for exceptional feats of high altitude ballooning. In 2016, Third Man Records, the Nashville label founded by Jack White, launched a gold-plated vinyl copy of Carl Sagan's "A Glorious Dawn" actively playing on a turntable lifted by a Kaymont 3000 gram balloon to 94,000 ft. The payload was 25lbs. When properly launched, our 3000g balloon with a 4-8lb payload will reach an estimated 115,000- 125,000 ft (35052- 38100 m) burst altitude.

The 4000 gram balloon is the MOAB, Mother of All (Weather) Balloons. Despite a long track record of successful high-altitude launches, we still consider the 4000g an experimental balloon, due to its incredible size and lifting capacity. The 4000g balloon is typically excluded from burst calculators and we only recommend this balloon for users with extensive high altitude balloon experience. When properly launched, our 4000g balloon with an 4-8lb payload will reach an estimated 120,000- 130,000 ft (36576- 39624 m) burst altitude.