The Tumi Alpha 3 Expandable Organizer Laptop Brief in black is a high-quality nylon briefcase designed to carry laptops up to 17 inches in size. It features a solid pattern, water-resistant material, and padded partitions to protect your device. With its compact dimensions of 12.5" in height, 16" in length, and 5.5" in width, this briefcase is compatible with various laptop brands such as Acer Aspire and Apple MacBook. Its expandable design provides extra storage space when needed, making it a versatile and practical choice for professionals on the go.