Wondering what tunnel size and material can accommodate your Flemish Giant rabbit’s massive frame? Our editorial team researched the best tunnels for this gentle giant breed, focusing on durability, width, and safety for their sensitive joints.

Flemish Giants need tunnels that are at least 18 inches in diameter to avoid back strain, and materials that can withstand heavy chewing without collapsing. We compared real products from top brands to find options that support their large size and enrichment needs.