These inserts will fit inside the Brain Bag:

The Size 1 Vertical Brain Cell has interior dimensions of approximately 15.4 × 10.3 × 1.2 inches (392 × 262 × 30 mm), exterior dimensions of approximately 17.6 × 11.2 × 2.3 inches (448 × 284 × 58 mm), and fits these computers:

The Size 2S Vertical Brain Cell has interior dimensions of approximately 14.5 × 10.8 × 1.7 inches (368 × 275 × 43 mm), exterior dimensions of approximately 16.8 × 11.5 × 2.8 inches (426 × 291 × 71 mm), and fits these computers:

The Size 4 Horizontal Brain Cell has interior dimensions of approximately 13.3 × 9.5 × 1.2 inches (338 × 241 × 30 mm), exterior dimensions of approximately 13.8 × 11.7 × 2.3 inches (350 × 298 × 58 mm), and fits these computers:

The Size 4 Vertical Brain Cell has interior dimensions of approximately 13.3 × 9.5 × 1.2 inches (338 × 241 × 30 mm), exterior dimensions of approximately 15.7 × 10.1 × 2.3 inches (399 × 257 × 58 mm), and fits these computers:

The Size 4Z Vertical Brain Cell has interior dimensions of approximately 14.3 × 9.8 × 0.9 inches (364 × 249 × 24 mm), exterior dimensions of approximately 16.6 × 10.4 × 2.3 inches (422 × 265 × 58 mm), and fits these computers:

The Size 5 Horizontal Brain Cell has interior dimensions of approximately 11.3 × 9.3 × 1.4 inches (286 × 236 × 35 mm), exterior dimensions of approximately 11.9 × 11.6 × 2.5 inches (302 × 294 × 63 mm), and fits these computers:

The Size 6 Vertical Brain Cell has interior dimensions of approximately 12.9 × 9.0 × 1.1 inches (327 × 228 × 29 mm), exterior dimensions of approximately 15.1 × 9.6 × 2.2 inches (384 × 243 × 57 mm), and fits these computers:

The Size 6T Horizontal Brain Cell has interior dimensions of approximately 12.4 × 10.0 × 1.3 inches (315 × 254 × 33 mm), exterior dimensions of approximately 13.0 × 12.3 × 2.4 inches (331 × 312 × 61 mm), and fits these computers:

The Size 6X Horizontal Brain Cell has interior dimensions of approximately 12.9 × 9.0 × 0.8 inches (327 × 228 × 19 mm), exterior dimensions of approximately 13.5 × 11.3 × 1.9 inches (343 × 286 × 47 mm), and fits these computers: