The DidySnap 4u features at a glance:

Padded waist belt with patented click buckle adjustable to all sizes. Ergonomic u-shape, wide and sturdy for added wearing comfort.
Fully adjustable seat supporting the physiological spread squat position.
Padded shoulder straps, continuously adjustable to fit the carrying position and size of the wearer.
Depending on age and size, the shoulder straps are clicked into the M-shaped buckle or attached to the side of the back panel. Straps can be worn parallel or crosswise.
 Back panel made of organic DIDYMOS wrap cloth. Can be extended with the integrated headrest, adjustable by drawstrings.
The headrest can be fastened to the shoulder straps with strings to support the sleeping baby’s head.
For front, back and hip carries.
All fabrics used for back panel, belts and pads – made of DIDYMOS organic baby wraps. 
From birth into toddlerhood. , from 3,5 kg up to 20 kg.

DIDYMOS fabrics are...

Purposefully woven on special looms for the sole purpose of babywearing.
Are made from organic cotton (and other plant materials such as linen and hemp) and/or ethically-sourced animal fibres.
Woven with a diagonal stretch that creates an elasticity in the fabric allowing for the fabric to easily mould to the wearer and baby providing optimal comfort and support.
Most two-shoulder carries allow the weight of the child to be distributed evenly from shoulders to hips and one is able to wear even heavy children for long periods of time COMFORTABLY!