Is a 15 x 15in Travel Towel Enough for Adventures?

Hey guys, I’m totally pumped for my upcoming trips to Oman and Sri Lanka. I’ve never brought a travel towel with me before, but I’m thinking it could be a game-changer this time around. I have this FIEL towel that’s 15 x 15 inches, which I scored for free from my school as a promotional item. I tested it out after a shower, and it did an okay job – not completely dry, but probably good enough after a stroll in the sun. But I’m wondering, is it too small for more intense activities like swimming and canyoning? I noticed Decathlon sells a 60 x 80 cm microfiber towel, but it takes up more space in my bag. I’d rather stick with the smaller one if it’ll do the trick. So, for those of you with experience in one-bag travel and water adventures, what’s your take? Should I stick with my 15 x 15-inch towel, or opt for a larger size? My main concern is finding the right balance between size and effectiveness.