1. Medium-Sized Universal Fit for Most Mid-Size Items

50/100 Pcs of 6.7x9.8 Inch medium-sized universal bubble mailers, designed to fit the most common mid-size items without wasting space—such as small plush toys, 3-piece skincare sets, hardcover books, laptop chargers, folded cotton t-shirts, or mini coffee machine filters. The 50 Pcs pack meets personal needs (e.g., sending birthday gifts, returning mid-size online orders), while the 100 Pcs bulk option suits small business owners (like toy shops, beauty retailers, or home appliance accessory sellers) and aligns with JIT inventory to avoid overstocking and cut storage costs.

2. Heavy-Duty Protection for Fragile Mid-Size Goods

Crafted from thick, tear-resistant polyethylene with dense bubble layers, these padded mailing envelopes provide reliable shock absorption for fragile mid-size items. They shield delicate goods like glass candle jars (small), acrylic phone cases (packaged), ceramic mugs (mini), or wireless earphone boxes from bumps, scratches, and dust during transit—ideal for safeguarding parcels in local deliveries or short-haul cross-border shipping (e.g., sending beauty sets to international customers).

3. Hassle-Free Self-Sealing for Quick Packaging

Equipped with a strong-adhesion self-sealing strip (cut to match the mailer’s medium size, no extra tape needed). Simply peel off the protective liner and press firmly to seal securely, even for slightly bulky mid-size items (e.g., a folded t-shirt + a small greeting card). The medium-sized design keeps shipping weight light (most 50 Pcs packs weigh under 1.1lb), helping small businesses and personal users reduce logistics costs compared to using oversized mailers that take up extra space.

4. 100% Waterproof for All-Weather Reliability

The water-resistant surface repels rain, moisture, and accidental spills, keeping mid-size contents dry and intact. Whether you’re shipping fabric items (which fear water stains) or electronic accessories (which need moisture protection), these mailers eliminate the need for extra plastic wrap—perfect for outdoor drop-offs, rainy-day deliveries, or cross-border shipping where parcels may face unpredictable weather conditions.

5. Cost-Effective & Versatile for Regular Use

Made from high-quality materials that withstand repeated use (great for eco-conscious small businesses aiming to cut packaging costs) and resist minor wear (the sealed edge won’t split easily during handling). Compared to single-piece purchases or mismatched small/large mailers, the 100 Pcs bulk pack offers an average of 28% cost savings. The universal medium size also reduces the need to stock multiple packaging sizes—ideal for home-based businesses or sellers with diverse mid-size product lines.