The product was specially designed to address common challenges pro-painters and DIYers frequently face with wall repair such as shrinking, cracking and changes in paint sheen. Engineered nanoparticles create a primer-like film on the surface, allowing the repair to be virtually invisible under dried paint, for professional-looking results without having to prime. Square packaging was developed to easily accommodate a three-inch putty knife, and the product"s lid was created to be easier to open than traditional spackling products that require a putty knife to remove the lid.