Price drop! Amazon has the 3-Pack FitBeast Resistance Bands Set (15 - 80 lbs) on sale for $21 - 45% off with coupon code D7IDMUUK at checkout = $12 with free shipping on $35+ or with Prime. The 4-Pack is $14 and 5-Pack is $16 with same code.

Useful for muscle toning, strength building, or rehabilitation.