FSC stands for Forest Stewardship Council, an independent, non-governmental, not-for profit organization established to promote the responsible management of the world’s forest which governs paper from sustainable forests. All FSC Certified paper comes from sustained forests.
Obos are made of extra thick paperboard. To give you and idea of what that means, each of the Obos parts are about 100 times thicker than a sheet of typical paper from your home printer. The extra thick paper board is heavy and rigid. Also, the way that Obos are folded and manufactured gives them additional strength. The slots are engineered to withstand swapping parts.
Like... real Obos? or the Obos figurines that you can get on Kickstarter? Because real Obos - the ones that live on Planet Obo - are ten feet tall. The Obos figurines that you can get here are approximately 2.1” cubes - and after you attach all the parts, they grow to become up to 4” all around.
Please post your Obo choices in the comments section of the project page. When the campaign is closed, you will receive a form where you can provide your shipping information. There will also be a place on that form where you can confirm the Obos you want.
Don't see the answer to your question? Ask the project creator directly.