Beautyflier Wide Mouth Mason Jars 64oz Sleeve, Large Mason Jar 64 Ounce Insulators, Wide Mouth Half Gallon Mason Jars Sprouting Jars Blackout Sleeve, Sleeve Only (Black)

These insulators are wonderful. They have a zipper to aid in getting the insulator on the jar and once they are on the jar, are snug and protective.

These 64 oz/half-gallon Mason jar sleeves work perfectly for sprout growing. Initially, I thought they would be too short and would not cover the jar well enough. Turns out they fit fine and are very easy to slide onto the jars. Not sure why they are called 'insulators' since that suggests blocking heat or cold out, but whatever. They do block out light which helps sprouts grow.

wonderful and the only ones like them. they are worth it to me. if you drop or break the glass then this catches it hopefully. just get several you cannot go wrong.

Bought this as a gift and it works very well.

Neoprene cozy that fits the Ball 64 oz Mason Jar wide mouth perfectly.

These covers are high quality and work great. The only downside is they don’t cover 100 percent of the jar, leaving a slight gap between lid and cover allowing light to enter the jar which could lead to algae if using for hydroponics.

No hole at the bottom. I like it.

Really like these. Great to put around my sourdough starter to keep it warm.

The media could not be loaded.  Buena calidad buen precio y le quedaron también a estos que son cuadrados un poco forzados x q no es para estos pero lo medi y me gustó como quedó los proteja mucho.

I only bought this for the jars?