Sunshine Kids Wheely Mates Tunnel Gym A unique play area for your active little one, the Sunshine Kids Tunnel Gym playful padded mat will entertain for hours. The colorful tunnel provides visual stimulation with bright, smiling characters and images. The gym can be configured six different ways creating new, yet familiar environments. Detachable, textured chewing rings hang from the gyms tunnels to soothe sore, teething gums.