The Pico XL is 50% larger than the standard version. Its taller with extra levels & ladders to create an exciting & fun packed home. The Pico XL still has all the great features of the original cage, enhanced loft den with great access for pet owners & enhanced ventilation, fully-furnished design with wheel, food dish & drop-in water bottle, twin doors with secure closure design, cage & accessories lift off the base as one unit for quick & easy cleaning, high quality finish to wire cage & plastic accessories, 8.5mm bar spacing makes the XL suitable for most mice & dwarf hamsters over six weeks of age. Dimensions 50x 36x 47cm