Hollow vs Solid is simply a preference. Some artists prefer the wight of the Solid to create spins and for Duo work, whilst others prefer the lightness of a Hollow for above bar strap work.
This Hollow Aerial Hoop/Lyra is tab-less to ensure ultimate versatility. Made in Australia, it's construction is beautiful and incredibly strong. It has been independently tested and even under extreme conditions, did not break...please note though that a Hollow Lyra is NOT recommended for Duo/Doubles as it has a lower Working Load Limit