Apple Watch Ultra is also appropriate with 45mm bands, but 45mm bands need to only be worn for casual, every day wear. Rick Stella will be the Exercise tech editor with the Insider Critiques team. He assessments and stories on all types of wearables like action trackers and smartwatches, as https://allhealthmarket.com/product/aeahmarket/appleband/silicone-strap-for-apple-watch/silicone-strap-for-apple-watch-41-40-38-dandelion-flower-pattern-engraved-band-for-iwatch-8-7-6-5-4-3-se/