Glacier Tek cooling packs set for vests — 8-pack (4 large + 4 small), 59°F rapid-recharge, lightweight replacement inserts

These spare packs are replacement or backup inserts made specifically for Glacier Tek sports, concealable, original and classic cooling vests. They use a nontoxic phase-change material engineered to return to a comfortable 59° F and provide repeatable cooling cycles. The set includes both large and small sizes so you can tailor coverage, and each pack recharges fast in ice water, a freezer, or a refrigerator depending on how much downtime you have.

How quickly will these packs be ready when I need them?

The Glacier Tek packs are designed for rapid recharging so you can get back to using your vest with minimal wait. In an ice water bath they reach their cooling temperature in about 30 minutes; a standard freezer brings them to full chill in roughly one hour, and a refrigerator refreshes them in about two hours.

• 30 minutes to recharge in ice water for quick turnarounds
• 1 hour in a freezer for full readiness
• 2 hours in a refrigerator for gentle recharging

How long does each pack stay cool, and what temperature do they hold?

Each pack maintains a consistent comfort-level temperature of approximately 59°F, providing steady cooling without extreme cold. Typical usable cooling duration is about 2.5 hours per charge under normal conditions, letting you plan activities or shifts with predictable performance.

• Holds near 59°F for comfortable, sustained cooling
• Approximately 2.5 hours of effective cooling per charge
• Nontoxic interior material for safe, repeated use

Will these packs fit my Glacier Tek vest and how many should I use?

The spare pack set is built to match Glacier Tek sports, concealable, original and classic cooling vest pockets and contours. The set contains four large packs and four small packs so you can mix-and-match coverage: use more packs for whole-torso cooling or fewer for targeted relief where you need it most.

• Four large and four small packs for adjustable coverage
• Packs sized to fit Glacier Tek vest pockets and panels
• Use only the number of packs needed to balance mobility and cooling

What are the size, weight, and safety details I should know?

Each spare pack measures approximately 18" × 5.25" × 0.5" and weighs about 16 ounces, making them slim and lightweight enough to layer in a vest without bulk. The internal cooling medium is nonhazardous and intended for repeated freeze-thaw cycles; usual care is to avoid punctures and inspect packs periodically for wear.

• Individual pack dimensions: 18" by 5.25" by 0.5"
• Each pack weighs roughly 16 ounces for balanced weight distribution
• Nontoxic gel core—handle gently and replace if the outer shell is compromised

Who this set is for: This eight-pack spare set suits athletes, outdoor workers, event staff, or anyone using Glacier Tek cooling vests who wants reliable backup packs for continuous performance. It’s ideal when you need to swap cold inserts quickly between uses, customize coverage for activity level, or keep extra packs on-hand for longer outings and shifts.