I see condensation between the walls -- help! Fellow Products September 26, 2017 00:41 Follow Because the glass is handblown, imperfections, while rare, are possible. Please contact us with photos of your glassware and we'll help you get it sorted out. Related articles What makes Fellow's glassware different? What makes Joey Mugs so special? I have additional questions, how do I contact Fellow? Fellow's Product Warranties Help! I lost a part for one of your products - how do I get another one? Comments 0 comments Article is closed for comments.