Booster Block Questions Answered Size Differences? We offer Booster Blocks two sizes: Both are foam blocks 3 inches high with a minimal difference in width and length between the two sizes. Compatibility? Until we restock size MED/LG, we are confident in recommending XS/SM Booster Blocks for any K9 Sport Sack carrier up to and including size LG. Restocking? We do expect to restock MED/LG Booster Blocks sometime in June or July. We apologize for any inconvenience this may have caused and appreciate your patience as we are still experiencing effects from the COVID-19 pandemic. |