Adjustable Zipper Cooling Vest

• Contents

  Kool Max®

  Water-based, frozen solid

  Cool58®

  Phase-change material (PCM)

  Home & Away

  Vest plus one set of each

• How to charge

  Kool Max®

  Freezer only

  Cool58®

  Ice water, fridge or freezer

  Home & Away

  Each as its own type

• Charge time

  Kool Max®

  2–3 h in a freezer

  Cool58®

  15–20 min in ice water; 1–1.5 h in a fridge or freezer

  Home & Away

  —

• Cooling in the vest*

  Kool Max®

  Up to 3–4 h

  Cool58®

  Up to 2–3 h

  Home & Away

  Depends on the set in use

• Temperature

  Kool Max®

  Frozen; highest cooling energy (maker)

  Cool58®

  Steady 58 °F (14.4 °C)

  Home & Away

  —

• Humidity

  Kool Max®

  Not affected (maker)

  Cool58®

  Not affected (maker)

  Home & Away

  —

• Maker suggests for

  Kool Max®

  High-heat industrial work, long outdoor shifts; needs a freezer

  Cool58®

  No freezer, travel, indoor work, clean rooms

  Home & Away

  Freezer at base, ice water on the move

• Price, M/L cotton†

  Kool Max®

  USD 140

  Cool58®

  USD 195

  Home & Away

  USD 225 (shown reduced from 250)

*Maker's estimates; actual time depends on climate, activity and body metabolism. The instruction leaflet states up to 4 h for Kool Max and up to 3 h for Cool58. †Maker's US online store, 2026-10-11, before tax and shipping.

• XS/S

  Chest & waist

  76–97 cm (30–38 in)

  Vest length

  46–48 cm

  Weight (chart)

  0.9–1.4 kg

  Packs

  5

• S/M

  Chest & waist

  81–102 cm (32–40 in)

  Vest length

  48–52 cm

  Weight (chart)

  1.1–1.8 kg

  Packs

  8

• M/L

  Chest & waist

  88–113 cm (34.5–44.5 in)

  Vest length

  53–57 cm

  Weight (chart)

  1.4–2.0 kg

  Packs

  9

• L/XL

  Chest & waist

  93–131 cm (36.5–51.5 in)

  Vest length

  57–62 cm

  Weight (chart)

  1.4–2.5 kg

  Packs

  11

• XL/2XL

  Chest & waist

  98–144 cm (38.5–56.5 in)

  Vest length

  65–70 cm

  Weight (chart)

  1.6–2.7 kg

  Packs

  12

• 2XL/3XL

  Chest & waist

  109–163 cm (43–64 in)

  Vest length

  69–75 cm

  Weight (chart)

  1.6–2.7 kg

  Packs

  12

From the maker's size chart, which shows pack placement with Kool Max packs. The chart lists a weight range per size without saying whether the packs are included.

1. 
   01

   Charge the packs

   Lay Kool Max packs flat in a freezer until frozen hard (2–3 h) and keep them stored there. Lay Cool58 packs flat in ice water, a fridge or a freezer; they turn solid white when ready.

2. 
   02

   Set the straps once

   Put the vest on and adjust the hook-and-loop straps at the shoulders, chest and waist until it sits snugly. After that, the front zip is enough to put it on and take it off.

3. 
   03

   Load the pockets

   Slide the packs into the insulated inner pockets: 5 to 12, depending on size. Not every pocket has to be filled; fewer packs, for example only along the spine, make the vest lighter.

4. 04

   Wear it over a fabric layer

   Keep at least one layer of fabric between the skin and freezer-charged packs. The maker recommends wearing such products over clothing and adding or removing layers to adjust the cold.

5. 05

   Swap packs during the shift

   For site work, the maker suggests loading the vest before the shift and keeping charged spare packs in a cooler on site to rotate as needed.

6. 06

   Clean and store

   The leaflet says to hand wash cotton vests in cool water with mild detergent and hang them to dry, and to wipe nylon vests or hand wash them. Wipe the packs clean and store them in a freezer or a cool, dry place.

Key specs

Zip-front vest adjusted with hook-and-loop straps at chest, waist and shoulders; 100% cotton twill (six colours) or two-ply nylon (navy). Insulated inner pockets hold 5–12 packs of 4.5 × 6 in (about 11 × 15 cm), by size. Kool Max water-based packs: 2–3 h in a freezer, up to 3–4 h of cooling; Cool58 phase-change packs (58 °F/14.4 °C): 15–20 min in ice water, up to 2–3 h (maker's estimates). Sizes XS/S–2XL/3XL for chest and waist 76–163 cm; listed weight 0.9–2.7 kg by size.

Price conditions

Not published for Japan. The maker's US online store lists the cotton vest at USD 120–155 with Kool Max packs, USD 150–230 with Cool58 packs and USD 162–274.50 with both sets (“Home & Away”, shown reduced from USD 180–305), depending on size; the nylon version is USD 165–315 (2026-10-11, before tax and shipping).

Trial

Not in public info

Lead time

Not published for Japan. The maker says orders placed before 12 noon US Eastern time on weekdays usually ship from Ohio the same day; for international orders it gives no delivery time and notes that customs clearance varies by country.

Service and repair

One-year warranty against defects in materials and workmanship; Polar repairs or replaces at its discretion (maker's terms). Unused items in original condition can be returned within 30 days, less a 10% fee; shipping is not refunded. Phone and email support Monday–Friday, 8:30–16:30 US Eastern time.

Local partner

Not in public info

StandardsMaker's declaration

Not in public info