Reusable 6 x 4 inch Leakproof Ice Packs Leakproof, durable construction: hard, puncture-resistant plastic exterior with a sealed design prevents leaks and holds up in rugged outdoor use. Safe materials: made with non-toxic PE materials for repeated, safe reuse — an economical and more sustainable alternative to single-use cold packs. Compact size and compatibility: 6 x 4 inch dimensions fit neatly in most lunch boxes, small coolers, insulated bags, and shopping bags without taking up excess space. Multi-purpose performance: use to keep meals fresh, cool beverages, or reduce swelling from surface injuries. Compact shape makes them easy to position around items or body parts. Travel- and outdoor-ready: sturdy exterior and sealed construction make these packs suitable for picnics, camping, commuting, or emergency kits. Easy to store and reuse: small footprint allows stacking in freezers; wipe-clean exterior simplifies maintenance. Practical use scenarios School or work lunches: place one ice pack inside an insulated lunch box to keep perishable items cooler until mealtime. Grocery runs and picnics: pack several in a cooler or insulated tote to maintain cold temperature for dairy, meat, or drinks during transport. First aid and travel: use as a cold compress for minor bumps or swelling during sports, hikes, or while traveling. What you get A reusable, compact 6 x 4 inch ice pack constructed from non-toxic PE material with a sealed, puncture-resistant plastic exterior designed for everyday and outdoor use.