Special Needs Resources is a proud supplier of ARK Therapeutic tools.
ARK chew tools come in 3 color-coded toughness levels: - Soft / Standard - this is the softest and chewiest level - XT / Medium Firm - this is the middle level; It's firmer, but still fairly chewy - XXT / Super Firm - this is the toughest level; It still has some “chewability” to it, but it’s fairly rigid / pretty firm
Usually we recommend going with the softest/standard level by default. Unless someone chews through or causes damage to anything else they chew on (chews through pencils, chews holes in shirts, etc.), in which case the XT level would be longer lasting.
If someone does chew through things, it’s possible they may need the toughest XXT level eventually. XXT is super firm, though, so we don't always recommend getting it right off the bat (some people find it uncomfortable chewing on something that firm).
So XXT is usually best either for people who have chewed through the XT level already, and/or for anyone who already likes chewing on very hard items - things like legos, hard plastic toys, wooden items, etc.
Please note: Designs that are wider and "beefier" will feel tougher than designs that are more slender in the same toughness level. For example, the Dino-Bite in XT will feel tougher than the Krypto-Bite in XT.