Storchen Wiege Leo Marine Size 6 (702) In Stock Now

This is the most common starting size, unless you are particularly petite or particularly large this can be a great size to start with. 

 Works best: From Birth to whenever you're done (also make great picnic blanket, hammock and emergency high chair)

Options: parent facing, forward facing, hip carry, back carry, tandem, The choice is endless!

Straps: Any way you want it! wide straps can be moulded to fit whereever and however comfortable. 

We do not sell this brand, you can purchase a new one direct from the manufacturer or www.koalaslings.co.uk

Some people like this for:

Newborns(No insert!) , nosy babies, warm weather, hip carries, sharing with another adult. Easy to narrow and widen. Simple design. Quick back carries, versatility, packability, colour, accessories. They make great picnic blankets. differently coloured seams make for easy practice. 

Some people don't like this: 
a bit of a learning curve.
overwhelming amount of fabric

Instructions can be found here:

Manufacturers videos, tutorials, instructions (these are just some examples)
Oscha
lenny lamb

didymos