Is this item returnable if it doesn't work for me?

NO! Not at all, Amazon says it's hazardous therefore non-returnable. What a JOKE! They can ship it but can't take it back? BTW, these are nearly empty upon arrival, not a hint of liquid in the cans, 50 breaths in each can? For a one lung baby maybe.

how much does each canister weigh?

Each canister weighs about 1.3 oz

Is there a propellent? What is the other 1-2%?

We are the only company that uses Vacuum Crimping. The only thing inside the can is Pressurized Oxygen. Video shows how we do this.

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O2 Blast - Pure Oxygen Supplement - Filled with 99.99% Pure Oxygen to Support Fast Recovery, Increase Stamina & Enhance Focus for High Altitude and Action Sports, 4L Portable Can Flip-Top Cap, 3-Pack

O2 Blast - Pure Oxygen Supplement - Filled with 99.99% Pure Oxygen to Support Fast Recovery, Increase Stamina & Enhance Focus for High Altitude and Action Sports, 4L Portable Can Flip-Top Cap, 3-Pack

Product ID: 420961157

⚡50 Breaths per Can

🎒4L Portable Canister

💨99.99% Pure Oxygen

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€ 88.13

Duties & taxes included

In stock

Sold byAmazon SlovakiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💨 Breathe Pure, Perform More — Oxygen on Demand for the Driven Millennial

ULTRA PORTABLE ENERGY - Compact 4L canister fits effortlessly in your gym bag or backpack for on-the-go oxygen support.
PURE OXYGEN POWER BOOST - Experience a clean 99.99% oxygen surge to elevate stamina and speed recovery.
QUICK INHALE INSTANT RECHARGE - Each can delivers 50 deep breaths—press, inhale, and feel revitalized within seconds.
VERSATILE OXYGEN ANYTIME ANYWHERE - Perfect for high-altitude adventures, intense workouts, jet lag recovery, or late-night focus boosts.
MADE IN THE USA WITH QUALITY ASSURANCE - Crafted and filled under strict U.S. standards for reliable, safe oxygen supplementation.

O2 Blast offers 99.99% pure oxygen in a lightweight, portable 4L canister delivering 50 breaths per unit. Designed for active professionals and athletes, it supports fast recovery, stamina, and mental focus—ideal for high-altitude sports, workouts, or daily energy boosts. Proudly made in the USA, this natural oxygen supplement is your go-to for instant revitalization anytime, anywhere.

Specifications

ASIN	B07SD3WCHJ
ASIN	B07SD3WCHJ
Age Range Description	Adult
Best Sellers Rank	#191,908 in Health ( See Top 100 in Health ) #5,288 in Multiple Vitamin-Mineral Combination Supplements
Brand	O2 Blast
Customer Reviews	3.5 3.5 out of 5 stars (1,354)
Customer reviews	3.5 3.5 out of 5 stars (1,354)
Date First Available	13 September 2019
Format	Aerosol
Is Discontinued By Manufacturer	No
Manufacturer	O2 Energy LLC.
Manufacturer reference	1003
Product Dimensions	17.78 x 9.53 x 13.97 cm; 117.93 g
Units	12000 Milliliters

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TrustScore 4.5 | 7,300+ reviews

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The product exactly matches the description. Very satisfied with my purchase.

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