Haband offers its Haband Men's Ultimate Travel Pants in several colors for $12.97. Coupon code "X17" bags free shipping. That's a savings of $18 and the lowest price we could find. They come in select waist sizes from 32 to 44 and inseams from 25-26 to 31-32. (Larger sizes are available for $3 extra.)
You very likely are putting your laptop battery into an early grave.