Beat the heat.
Train frozen.
The cooling weighted vest you freeze before you wear. Strap in and the cold reaches your back and chest the instant it touches you — no batteries, no ice packs, no soaking.
The cold hits the second you strap in and sinks to your core.
Pull it on and the chill spreads on contact — across your shoulders, down your spine, into your core. This isn't cool that sits on your skin; it's cold that soaks in and stays. No soaking, no dripping, no wet shirt — just deep, dry cold while the heat does its worst.
Cool the moment it touches you. For 60+ minutes.
No warm-up, no waiting. The chill lands the instant the vest meets your skin — then holds a cool-to-the-touch surface for 60+ minutes before it's time for the freezer again.
Instant. The vest meets your skin cold, so the drop registers the second it's on — not five minutes later. That's the difference you feel before you've taken a step.
A cold engine, molded in. Zero bulk.
The cooling isn't a coating — it's the vest itself. Z-Fit™ is filled with a silicone-and-iron-sand fusion, molded as one uniform piece so the cold sits evenly throughout instead of pooling in a separate pack or layer. Iron holds cold and gives it back slowly; the silicone keeps that cold close to your skin while staying soft and thin against your body.
Silicone + iron-sand, fused
Iron holds more cold than plain steel shot and releases it slowly — that's why the chill lasts instead of fading in minutes. It's fused into one solid piece, not packed in a separate pouch or insert.
Molded as one piece, filled evenly throughout
No pockets, no uneven pouches — just a smooth, consistent fill from top to bottom. That keeps the weight balanced on both sides of your body, and keeps the surface against your skin soft everywhere, not just at the seams.
50% less bulk than old-school iron sand
Same load, half the thickness. Z-Fit™ sheds the bulky, rigid feel of traditional iron-sand vests, so it moves with you instead of against you.
Feel the difference for yourself.
Shop the Z-Fit™ Collection →Aimed at your back, chest & core — where the heat builds.
A cooling towel handles your neck and face. A Z-Fit™ vest sits flat against the biggest, hottest, sweatiest real estate on your body — the upper back, chest, and core — so the cooling lands where you actually overheat.
Upper Back & Shoulders
The first place heat piles up under a pack or in the gym. Full-contact cooling right across it.
Chest
Broad, flat contact over the chest — a large cooling surface a neck wrap simply can't reach.
Core & Midsection
Cooling wrapped around your core — the high-sweat zone that drives how hot you feel overall.
Freeze it. Wear it. Beat the heat.
Three steps, about ninety minutes' lead time. Do it the night before and it's ready when you are.
Bag It Up
Seal it in its storage bag before freezing. Keeps it hygienic, frost-free, and ready every time you reach for it.
KEEP IT FRESHLoad the Cold
Lay it flat in the freezer for 60–90 minutes — long enough to charge the chill, short enough to stay flexible.
❄ 60–90 MINRest, Then Go
Give it 10–15 minutes after the freezer, then strap in. Peak chill hits by minute 45 and lasts 1–2 hours total.
▶ REST 10–15 MINFreezable Weighted Vests & Gear
Every piece freezes flat and stays cool for the long haul — pick your load, chill it, and train through the hottest days of summer.
One vest, every hot-weather move
Freeze it once and it carries whatever the day throws at you — from a sunrise run to a slow evening walk.
Running
Hold your core temp down through the sweatiest miles of a hot-weather run.
Yoga
Cool, weighted grounding for flow and hold — no overheating mid-practice.
Gym & Strength
Frozen relief between sets so the heat never cuts a session short.
Hiking & Rucking
Load and cool at once on the trail — no extra kit to carry.
Camping
Beat afternoon camp heat with a quick freezer or cooler chill.
Walking
Gentle body cooling for step counts under the midday sun.
Dog Walks & Errands
Everyday heat relief for the ordinary outdoor stuff too.
Recovery
Cool-down contact after a hard effort, whenever you need it.
Soft. Skin-Friendly. Barely There.
You can't get results from a weighted vest you stopped wearing. Z-Fit™ stays comfortable enough that you won't want to.
Skin-Friendly Fabric
What touches your skin is soft, smooth fabric — not the cooling core underneath. You get the chill without ever feeling the fill.
Balanced Fit
The fill sits evenly throughout, so the weight rides the same on both sides — no lopsided drag, no shifting mid-set.
50% Less Bulk
Same load, half the thickness of old-school iron-sand vests. It sits close instead of stacking up.
Locked-In Fit
Adjustable straps keep the cooling surface flush against your back and chest, rep after rep, mile after mile.
Sweat happens. Wash it clean.
Summer means more sweat, and anything you wear against your skin takes some of it on. The difference is what you can do about it.
Fully Hand-Washable
Most weighted vests you can only wipe down — a quick pass over the surface while the sweat that soaked in stays put. Z-Fit™ washes clean all the way through: hand-wash the X-Shaped, or machine-wash the Y-Shaped and Flex once the weight inserts are removed.
Odorless, Skin-Friendly Fabric
It comes out of the box with no chemical odor, made from soft, skin-friendly materials that sit gently against you — comfortable enough for any age or skin type to wear, wash after wash.
Cooler sessions. Bigger results.
The cooling gets you out the door in the heat — the weight is what makes the work count. You're not just staying comfortable, you're training harder while you do it.
Burn More, Every Session
Added load means your body works harder through the same walk, run, or workout — more effort, more burn, without adding time.
Build Strength & Bone Density
Weight-bearing movement helps build lower-body strength and supports bone density — benefits that stack up the more you wear it.
Stay Cool While You Do It
The reason most people skip summer training is the heat. Take that off the table and the healthy habit actually sticks.
Pick your color. Match your kit.
More than one way to wear it. A range of colors means you can go stealth, go bright, or just match what's already in your gym bag.
Freeze, wear & care — answered
How cold does it get, and how long does it last?
It meets your skin cold enough to feel instantly, then holds a cool-to-the-touch surface for 60+ minutes of wear before a re-freeze. Exact numbers depend on how hot it is and how hard you're going.
How do I freeze it — and should it go in the bag?
Yes, always seal it in the storage bag first, then lay it flat in the freezer for 60–90 minutes. Sealing keeps it hygienic, frost-free, and clean to pull on, and protects the fabric between sessions.
Can I actually wash it?
Yes — hand-wash the Z-Fit™ X-Shaped, or machine-wash the Z-Fit™ Y-Shaped and Flex once the weight inserts are removed. Either way, it comes back genuinely clean, not just surface-wiped like traditional weighted vests.
Who is it good for?
It's built with a soft, skin-friendly outer fabric that's comfortable for a wide range of ages and body types. As with any weighted training — and especially for younger or first-time users — start light, build up gradually.
Is it still a real weighted vest?
Completely. Same load and the same strength, burn, and bone-density benefits — the cooling is a summer bonus, not a trade-off. And it's thinner and lighter than traditional iron-sand vests.
Do I need batteries, ice packs, or water?
None. No charging, no soaking, no packs to refill or lose. The cold lives in the vest itself — freeze it and wear it.
Don't survive summer.
Freeze it.
Freeze it tonight. Beat the heat tomorrow.
Shop the Cooling CollectionFree & Fast Shipping
All orders ship free and arrive within 3–5 business days.
1-Year Warranty
Train with confidence knowing your purchase is protected for a full year.
30-Day Free Returns
Not the perfect fit? Send it back within 30 days for free.