That's not an exaggeration:  these are a revolution in refillable bottles.  Why?  Because they solve the riddle of refilling squeeze bottles.  Here's why:

1.  Most squeeze bottles have a small opening.  This has a very wide opening, making it easy to fill.
2.  Most squeeze bottles are made of a fairly rigid plastic materials with sharp angles at the corners and base, making it very hard to squeeze the last bits of liquid out.  This is a completely rounded, ultra-soft (but strong and durable) silicone body that is very easy to squeeze.
3.  Most squeeze bottles have a simple opening at the top, making it hard to control pour flow and hard to prevent spills/drips.  This has one of those newfangled "bubble" openings like on the new types of ketchup bottles:  easy to control and no messes.

I have four of them now, and I have been using them *daily* for almost two years (purchased on Amazon last Spring).  I have a 1.25 oz bottle for hand sanitizer (and I literally use it multiple times each day).  I also have three 3 oz bottles for travel (shampoo, soap, and laundry soap).  All of them perform fantastically.  Cleaning is a breeze:  they easily come apart into three pieces (the body, ring, and cap), just rinse with hot water and let dry.  Because of the ultra-wide mouth, the body is very easy to rinse out.  Done.

In short:  great bottle, probably the best idea in refillable squeeze bottles ever, no joke.