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.

O2 Blast 4l Portable Oxygen Can With Flip Top Cap

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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S$69

Duties & taxes included

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Sold byAmazon SINGAPOREDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💨 Elevate your energy—breathe pure power on the go!

MADE IN THE USA - Quality-controlled and crafted domestically for trusted, safe oxygen on demand.
PURE OXYGEN POWER - Experience 95-99% pure oxygen for natural energy and recovery anytime, anywhere.
VERSATILE USE CASES - Perfect for altitude adjustment, workouts, jet lag, late nights, or long drives.
INSTANT ENERGY BOOST - Just 3-5 deep breaths deliver revitalizing oxygen to fuel your performance and focus.
COMPACT LIGHTWEIGHT - Sleek 4L can fits effortlessly in your gym bag or backpack—ready when you are.

O2 Blast is a 4-liter portable oxygen canister delivering 50 breaths of 95-99% pure oxygen per can. Designed for active professionals and athletes, its compact, lightweight design fits easily in bags for use during workouts, altitude changes, or recovery. Made in the USA, it offers a natural, caffeine-free energy boost anytime you need it.

Specifications

ASIN	B07SD3WCHJ
ASIN	B07SD3WCHJ
Age Range Description	Adult
Best Sellers Rank	#220,432 in Health ( See Top 100 in Health ) #5,626 in Multiple Vitamin-Mineral Combination Supplements
Brand	O2 Blast
Customer Reviews	3.6 3.6 out of 5 stars (1,357)
Customer reviews	3.6 3.6 out of 5 stars (1,357)
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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