Need more resistance for a really powerful skater? Purchase the double cord for $15 each. These are sold separate and do not come with a Powertwist. You will get two single cords with your Powertwist purchase.
Price: $23 total=$15 (Double Cord , 1 pcs.) + $8 Shipping
Price: $38 total=$30 (Double Cord , 2 pcs.) + $8 Shipping