The 6' Spa-N-A-Box heats up to a calming 104 degrees ( but is fully adjustable) and has over 100 micro-air jets, which means you can enjoy your hot tub soak and soothe your aching, tired muscles with a vigourous all-over full body massage. These spas are great for hydrotherapy, for those who suffer from chronic back pain, or maybe you just want to unwind at the end of the day. Imagine the warm, bubbly water flowing in between your shoulder blades and up to your neck as the stress melts away like butter. Picture this: You can also share the spa experience with that special someone, spend quality time with your family, have a get together with friends, or make your spa the center of attention at your next backyard barbecue. The Spa-N-A-Box's Liner is constructed of a Heavy Duty Marine Grade 3 ply PVC Vinyl, and it's built to last. This K-2 material is the same material used in white water rafts. The comfortable padded floor is barrier free - this makes the Spa-N-A-Box a great choice for aerobics excercises, and allows you to move freely and sit where ever you desire. A soft vinyl floor is much safer getting in and out of compared to hard acrylic or fiberglass. The Spa-N-A-Box is truly portable, and sets up in under 30 minutes. You don't need any tools, wiring, or special plumbing to enjoy your new spa. The spa will setup anywhere you have a standard 110V grounded outlet... on your lanai, in your yard, or even inside your home. For Northerners, just imagine: Set your spa up on the backyard deck in spring and summer to enjoy the outdoors, then bring it inside to set up in your basement or Man-Cave for the winter. Simply assemble the spa, fill with water from your garden hose, use the provided covers, plug it in and relax as you wait for the spa to reach your set temperature. It really is that easy, get your swimsuit ready because the next step is enjoying a soothing bubble massage!