Came across this case. It matches the green sport band pretty darn close. I purchased it from Amazon.
iPhone 6 Plus case, Caseology [Sleek Armor] [Black / Lime Green] Dual Layer Impact Resistant [Shock Absorbent TPU] Apple iPhone 6 Plus case
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iPhone 6 Plus case, Caseology [Sleek Armor] [Black / Lime Green] Dual Layer Impact Resistant [Shock Absorbent TPU] Apple iPhone 6 Plus case
Sent from my iPhone using Tapatalk