RAINBOW Dry Ice Pack Sheets for Shipping and Coolers - Reusable Long

In this review of the RAINBOW dry ice pack sheets the bottom line is simple: these thin, reusable ice blankets are best for people who need a flexible, space-saving cold source for coolers, lunch boxes, or short shipping legs. They stand out because each 7'in x 13'in sheet contains 12 individual cells and can be cut to fit containers, and the single biggest reason to buy is the combination of pack count and versatility - a 100-sheet pack gives a lot of coverage for multi-day use or frequent cold transport.

Key Features

• Reusable sheet design: Each sheet soaks in water in 3-5 minutes and, after wiping and freezing for at least 6 hours, becomes a reusable cold source that can be refrozen and used again.
• Flexible sizing: Sheets are thin and can be cut to size so they conform to lunch boxes, coolers, or insulated shipping containers for more efficient cold contact.
• 12-cell construction: Twelve individual cells per 7'in x 13'in sheet help spread cooling evenly across a surface or arranged around items for better coverage.
• Food safe and non-toxic: The material is described as food touchable and environmentally safe, suitable for perishables like seafood or beverages when used properly.
• Multi-use applications: These sheets work for trip, camping, medical transport like insulin coolers, and as cold therapy for aches when used with a barrier to avoid skin contact.

Who It's For

These ice pack sheets suit outdoor enthusiasts who pack coolers for day trips, people who need a compact cold source for lunch boxes, and small-scale shippers moving perishables on shorter routes. The 100-sheet quantity and slim storage make them attractive for anyone who needs many thin, reusable pads rather than a few bulky blocks.

Those who need freezer-long performance to keep items fully frozen for extended multi-day transit, or who require extremely rugged packs that resist tearing when pried apart, should consider sturdier ice-block style solutions instead. Users who expect hours-long deep-freeze retention in large, warm coolers may find mixed results.

Pros & Cons

Pros

• Large 100-sheet pack offers high value for repeat or bulk use in coolers and lunch boxes.
• Sheets are thin, flexible, and can be cut to fit irregular spaces for improved cold contact.
• Food-safe, non-toxic construction makes them suitable for perishables and medical items like insulin coolers.

Cons

• Cold retention is mixed depending on container and pack arrangement; some users report they do not keep items fully frozen for long periods.
• Sheets can tear or stick together if not fully dried before freezing, so they need careful handling and preparation.

Specifications

Brand	RAINBOW
Sheet size	7'in x 13'in per piece
Cells per sheet	12 cells
Quantity	100 sheets per pack
Activation	Soak 3-5 minutes, wipe dry, freeze flat 6+ hours
Material sides	One mesh side and one plastic side

Our Verdict

The RAINBOW dry ice pack sheets are a practical, economical option for anyone who needs many thin, reusable cold pads that can be cut to size and packed flat for travel or short shipments. They deliver good value when used as directed and are best where flexible placement and food-safe contact are priorities, but users should plan their packing strategy to offset the variable cold retention and handle sheets carefully to avoid tearing.

Frequently Asked Questions

How long do these sheets need to freeze?
Sheets should be soaked, wiped dry on both sides, then frozen flat for at least 6 hours before use.

Can the sheets be cut to size?
Yes, the sheets can be trimmed to fit lunch boxes, coolers, or insulated packs to improve coverage and fit.

Are they safe for food and medical items like insulin?
Yes, the product is described as food touchable and non-toxic, suitable for perishables and insulin coolers when used according to instructions.