This PassPort IP2 high-density polyethylene (HDPE) 500ml shipping bottle is safe durable and cost-efficient. Specifically designed for packaging and transporting hazardous materials. Recommended for customers who are designing assembling and certifying their own combination packaging. Split- and puncture-resistant. Wide mouth allows for easy filling of dry materials or liquids. Heavy duty walls. Molded into bottom: IP2 marking material volume registration notch and the Nalgene® brand name. Certified for both domestic and international shipping. High-density polyethylene (HDPE) with polypropylene screw closure. Capacity: 500ml. 12/Pack; 4 Packs/Case. Nalgene® #: 2199-0016.