The caked hank on the left (color Azul) is just under a full skein (42g) and must be purchased with the uncaked hank of the same color. When purchased together, you will receive an additional $1 discount (which is why it is listed for a total of $9 -- $5 for the full hank and $4 for the partial caked hank). 
 
The caked hank on the right (color Caribbean) is a full hank (51g). 
 
 
Comfy, soft & breathable, this 2-ply, sport weight yarn is spun with 100% organic cotton.  Ideal for all seasons, the lightweight cotton has a matte finish & a brushed feel.  A nice twist gives textured stitches, ribbing & simple stockinette beautiful definition.
 
Fiber Content: 100% Certified Organic Cotton
Weight: Fine/ Sport
Yardage: 136 yards
Ball/Skein Weight: 50g
Care: Hand wash warm, lay flat to dry
Country of Origin: Peru