• Wide Compatibility with Large Size Design: Hifree 3d filament storage bags 32 * 34cm (12.6 * 13.4in) vacuum bags work seamlessly with 0.5KG, 0.75KG and 1KG filaments in 1.75mm, 2.85mm and 3mm sizes. They are also great for storing other 3D printing accessories and supplies.
• Effective Light Blocking Protection: Hifree vacuum bags feature a black and transparent dual-sided design. One side allows you to check filament easily, while the black side blocks light to minimize damage and extend filament life.
• High-Strength PA+PE Composite Material: Specially engineered for 3D printer filaments, these vacuum storage bags use thick PA+PE composite material that is durable, tough, and resistant to punctures or tears.
• USB Port Vacuum Pump: Unlike traditional fixed plugs, our pump comes with both USB interfaces. It can be powered by power banks, laptops and other USB-enabled devices, making it extremely portable and convenient.
• Simple & Quick Operation Steps: Just seal the bag with the clip, press the valve flat, align the pump, then press to start. Keep it on for 1–2 seconds until all air is removed and the pump automatically stops.

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