These white poly bubble mailers provide lightweight cushioning for mailing small items. Made from PE material with padded construction, they offer water-resistant protection and a strong self-seal closure suitable for various shipping needs. Features: Lightweight Envelopes: Designed to reduce mailing weight while offering protective cushioning. Strengthened Bottom: Seamless bottom structure adds durability and extra protection. Self-Seal Closure: Strong adhesive strip eliminates the need for staples or tape. Water-Resistant Design: Helps protect contents and provides a tamper-evident seal. Specifications: Sizes: 20×30 cm + 4 cm, 18×23 cm + 4 cm Colour: White Material: PE Quantity: 25 / 50 / 100 pieces Package Includes: Poly Bubble Mailer Envelopes (selected quantity) Note: Please allow a 1–3 cm size difference due to manual measurement. Slight colour variations may occur due to lighting or screen settings.