The BT-Mg-AS is the result of user requests for an incredibly light weight front and rear suspension chair with center of gravity adjustability. The rear wheel center of gravity adjustment allows center of gravity placement from 1.5" to 4.5". The center of gravity is easily adjusted by the user and can be done in under 5 minutes with only a single wrench. The BT-Mg-AS cuts down on weight by utilizing magnesium frame construction, high tech laminated carbon fiber sailcloth for seating material, titanium hardware, Spinergy Light Extreme rear wheels, and Frog Legs front and rear elastic-polymer suspension to dampen shock. Add it all up, and you have an Impossibly Light™ four wheel suspension chair! Transport weight is just 12.6 pounds for a 16" x 16" fame and 19.7 pounds for the entire chair including the rear wheels (not including cushion- cushion weights range from 1 pound and up depending on size and material).

A note on Magnesium: Magnesium is the lightest structural metal on the planet! By volume, magnesium is roughly 35% lighter than aluminum and 62% lighter than titanium, yet has similar strength characteristics as 6061-T6 aluminum. Magnesium is also exceptional at dampening vibrations which gives a smoother ride.