ASSEMBLY NEEDED: Engaging DIY project, unleash your inner decorator with the KAINSY light up number 1 kit, package includes pre-cut foam boards, light strings and instruction manual, follow the step-by-step instructions for a hassle-free assembly(noted: batteries are not included)；After assembly, please reinforce the entire number with a hot melt gun WIDELY USAGE: Versatile 4ft design, transform your celebrations with the light up number 1, ideal for 1st birthdays, anniversaries, wild one, and more, combine them with a balloon garland arch kit to make your party unforgettable, this piece complements any theme effortlessly, KAINSY large marquee 1 number with light, freely customize your party theme, a perfect backdrop to decorate any of romantic party and celebrating occasion SLOT DESIGN: 4ft number 1, included instruction manual ensures you breeze through the setup process, light strings and LED bulbs of the same model, pre-cut foam boards with slots fit perfectly, providing a professional finish without the stress, enjoy the process, only takes less than 30 mins to build this giant, gorgeous light up numbers ENJOY THE PARTY: KAINSY Marquee 1 numbers frame are made of reinforced thick cardboard, which will not easily bend or break, light up number has better bearing capacity, a fixed bracket is installed on the back of each 4ft marquee 1 number, which make the light up number marquee stand more stable, just enjoy your party WARM TIPS: While using the hot melt adhesive, handle the hot melt gun and adhesive with care, choose colors and sizes that match your event's theme when decorating with balloons; if you have any questions or need assistance with assembling your KAINSY mosaic number 1, our dedicated customer support team is just a message away Light up Number