Kryonet Size Of Packets

Second post on this, just trying to get my head straight.

How does sending 1 Byte:

http://puu.sh/aqxWA/0d7b52c914.png

Output as 6 Bytes?:

http://puu.sh/aqxUK/5e2afb83b9.png

I looked at the src but don’t really understand what is happening - I see that sendTCP prints out length - what is the significance of ‘length’ in terms of bandwidth?.. like, how many Bytes am I actually sending (including overhead) with my call to sendTCP(byte);?