The brushes pull out from the chromed metal tube base and then are pushed in the other way for use.  The bristles are well protected by the tubular handle / cover when packed.  There is a small breather hole at the end of the tube so the brushes can dry out.

The brushes are fairly short/stubby even when extended see the dimensions below:

The overall length of the brushes (extended ready for use) 

no 2 14.3cm

no 4 14.5cm

no 6 14.5cm

Case with the brushes in ready for travel:

12cm x 6cm x 2.3cm (Including the tab with the hole that sticks out, 15cm x 6cm x 2.3cm

Weight 56g

I am a UK seller and all my items are shipped from the UK via Royal Mail.  Default post is 2nd class, if you need something quickly please upgrade to 1st class post.