Features:Black straps attached (no additional straps included)The bases and straps are interchangeable - Podiatrist and Physio recommended arch support - Biodegradable bases made from natural rubber and Bmz Bio-Foam - Animal cruelty-free construction and materials - The light-weight foot-bed moulds to your foot shape - Premium PVC foot straps with metal logo badge - Regular fit base with regular straps (unisex fit)Non-slip rubber sole - Aussie owned company with a patented footwear design - Customise your fit. Simply get the next size up or down in the straps - Customise your colour combo in less than 30 seconds - no tools required! The plugs are designed to fold over and pull through instead of snapping off if you have a "blow-out". You should be able to simply push the plug back through the hole in the base.