Hmm I didn't see the seam I'll have to look closer. It feels smooth, but not as soft as a kids ball pit ball
I build in Lego! Blogs at:
http://L3-G0.blogspot.com (or http://L3-G0.com for short)
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http://L3-G0.blogspot.com (or http://L3-G0.com for short)
http://MCK-Y.blogspot.com and
http://BB-8.blogspot.com