GoFit Ultimate 4-Foot X-Heavy Resistance Ultimate Power Tube with Core Performance DVD (Black / 20-Pound) Deluxe 4-foot resistance tube with door anchor, exercise poster, and 25-minute workout DVD Great upper body workout tool Health-club quality extra-heavy resistance level Power Tube Complete kit fits in any carry-on bag or briefcase Designed with a unique, reinforcing Inner Cord coil within the premium-grade tubing