I was going to ask 'What is POC Spine Ergo...
I was going to ask 'What is POC Spine Ergo BUG differ from POC Spine Ergo?'
but someone already answered it below, but it don't answer why BUG is starting from $99.95 when regular Ergo is about $160 if BUG has more comfortable cushion layer would you buy more comfortable one?
Yeah that is pretty weird. It looks like the ERGO is made of more durable material, and it also comes with cervical and coccyx attachments instead of the Bug where you need to buy those separately.