Why Do Milk Jugs Have Those Inverted Circles?

Product Description

The concave circles built into the sides of plastic milk jugs are an important part of their design.

Fact check: Meme falsely claims jug indents pop out if milk is old

Doctor-Approved Advice on How to Get Rid of Inverted Nipples

Why Do Milk Jugs Have Circles Built Into Their Sides? Details!

Vintage 1923 To 1925 -- 12 OZ -- Thatcher Manufacturing Glass Company-- EMB Milk

Here's Why Milk Jugs Have Those Inverted Circles

Tablecraft 53FCAPY Solid Yellow End Cap for Inverted or Squeeze Bottles with a 53 mm Opening

Nipple Formers – Peek A Boo Store

MetLink - Royal Meteorological Society Turn Water Upside Down

Why Do Milk Jugs Have Circle Indentations?

Fact check: Meme falsely claims jug indents pop out if milk is old