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One is 100% Organic Cotton, the other has good reviews that I liked the sound and the look of. They both feel soft and great quality. The Tri Blend is lighter and very soft.
Shipping in the UK is approx' £3.45 for one and £1.45 for each additional T Shirt in the same order. Don't frown if it's slightly different, it could be cheaper. Any wild changes I will revise this.