This 4000mL (128 ounce) narrow-mouth bottle is safe durable and cost-efficient. The wide-mouth bottle is specifically designed for packaging and transporting hazardous materials. Recommended for customers designing assembling and certifying their own combination packaging. Split- and puncture-resistant. 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). Capacity: 4000mL (128 ounce). Sold individually or 6 Packs/Case. Nalgene® #: 2099-0010.