Based on this product's specifications, here are some alternatives and similar models
Icebreaker 200 Oasis Long Sleeve Crew Neck Base Layer Shirt, Men's Merino Wool
Summary description:
The Icebreaker 200 Oasis is a high-quality men's base layer shirt crafted from 100% merino wool with a fabric weight of 200 g/m². Designed for optimal thermal regulation and comfort, this long-sleeve crew neck top is ideal for hiking, running, and outdoor activities in cooler conditions. Its natural moisture-wicking and odor-resistant properties ensure performance during intense use. Easy to maintain with machine wash compatibility.