Roto-molded vs injection-molded coolers: Roto-molded keeps ice for days, but injection-molded is fine for most people

Roto-molded coolers (Yeti and clones) use a seamless thick shell with dense foam, keeping ice frozen for days and surviving abuse, but cost $300+ and weigh 40 lbs empty. Injection-molded coolers (Igloo, Coleman) are cheaper, lighter, and fine for picnics or day trips, but ice won’t last a weekend. Most people overestimate their ice needs and are fine with injection-molded.