4 chamber. this item fits up to the following measurements:. length (axilla to fingertips) 32"/81.3. axilla 27"/68.6. bicep 26"/66. elbow 24"/61. forearm 21"/53.4. wrist 18"/45.7

Quantity Per Sell: 1
Dimensions: 11.5 X 8.1 X 2.6 Inch
Weight: 1.15lb
SKU: GS-3035-M
Independence Item # DWGS3035M