The product is a set of 30 poly zip envelopes in A4 letter size, made of polyvinyl chloride (PVC) material. These envelopes come in blue, yellow, white, green, and red colors, and are designed with features such as moisture-resistant, flap closure, and tear-resistant properties. Each envelope has a 1/3 cut tab at the top for easy access and organization. The package dimensions are 13.11x12.05x0.94 inches, and the weight is 2.09 pounds. The brand is BOPART, known for providing quality office supplies for business and industrial use.