After seeing a Klein Bottle
http://www.kleinbottle.com/images/babyinhand2.jpg" rel="gb_image[nice_pics]" title="...">http://www.kleinbottle.com/images/babyinhand2.jpg" name="post_img_resize_2" alt="..." title="..." border="0" style="display:none" />
net at a friends blog I thought That would be ideal for carrying sling amunition or other small objects.  No need for a drawstring.  Objects are placed in the tube at A.  The bag can be carried or hung at B where the tube meets the bag.  Tony

Good question.  The tube goes through and is intermeshed with a hole in the body of the net.  Are the contents inside? 

As my Cal professor would say "This is some dirty stuff! You kids go out sexing, but that's not half as dirty as this! Mathematically speaking of course."
http://en.wikipedia.org/wiki/Klein_bottle

Here is a knit Klein Bottle.

That's very nice, I must give it a try

Curious_aardvark
The golf balls roll out fairly easilly.  This golf ball net was an experinental prototype.  I am experimenting with other ways of connecting the tube shape.  Here is the latest.  Wider tube and the tennis balls are easy to retreive.  Tony

A - start of net
B - start of tube
C - tube connects to sleeve of netting wich leads to body of net.
The tube connects 2 horizontal slits of netting in the main net.  You can see the outer body of the net and the tube between B and C.