As seen in my designer light hack reel! We’ve sold them out several times already. I used 3 strands (20ft each) for this 7.5ft tree. But, the tree is already pre-lit and I didn’t string the lights around the back of the tree. Adjust your quantity accordingly for your own tree height and position. These lights twinkle like nothing else!! They are amazing! LTKSeasonal LTKhome LTKHoliday