AHigh quality aluminum tube with aluminum treatment on the surface;
BReinforced central vertical tube provides more supporting force;
CAnti-skidding rubber feet-pad with metal gasket inside makes it more durable;
DRubber tube inside prevent it from metal friction;
ESpecially designed expansion tube offers more convenient adjustment;
FSponge foaming armpit support and handle make it more comfortable to use;G:9 Gears for height adjustment (gear distance: 2.5cm)

SizeS M L XL Heightcm: S:100-120 M:110-130 L:120-140 XL:130-150