Karategi is the Japanese name for the karate training uniform. A karategi is somewhat similar to a judogi ( Judo uniform) as it shares a common origin; however, the material and cut of the uniform is generally much lighter and looser fitting. The heaviest of Karategi are only 0.45 kg (16 oz) compared to some judogi at 0.99 kg (35 oz). Because of the nature of Karate training which emphasizes striking, kicking and a more limited range of standing throws compared to Judo the karategi has evolved in a manner that maximizes mobility and speed without the extremely coarse and strong fabric required for grappling and throwing found in Judo. They are made from smooth cotton which may be brushed or ribbed for unrestricted movement and added comfort. Reinforced stitching is common, as to compensate for the stresses put on the gi.Inferior karategi are often cut from a light fabric similar to that of a summer shirt. These karategi are easily ripped, and tend to adhere to the practitioner's skin, creating some discomfort after any extensive perspiration is experienced. Such materials yield a karategi no heavier than the 0.2 kg (8 oz).
Karategi are sometimes worn to practice other arts, such as jujutsu, when the practitioners are young and can expect to grow out of the gi in a few years; in this case, their reduced durability in comparison to judogi is less of a factor, and buying karategi until the practitioner stops growing is more cost-effective.
The karate gi appears to have been developed from the Judo uniform. When Gichin Funakoshi demonstrated karate in Japan at the Kodokan, he still wore a traditional judo gi.
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Also the design differs for women's karate gi.
more explanation about karategi or karate uniform coming soon, wait with us...

Abstract:
Different styles of Karate have slightly different uniforms though all share the same basic design, differing only in the lengths of sleeves, legs and the skirt of the uwagi (jacket). Many karateka tend to wear their obi (belt) much longer than judoka and other martial artists