These alpaca pants are soft, cozy, and stretchy for easy movement. Made in natural alpaca colors without dyes, they maintain warmth and softness. Note that the white alpaca is ivory, and the black may appear dark brown in some lighting (see last picture for color reference). Organic merino wool is also available in natural white or dyed with black walnut husks from our farm, producing rich brown hues. Merino wool is slightly thinner than alpaca. Please ask for walnut-dyed wool photos. The pants feature a drawstring waist, or you can request elastic made from biodegradable organic cotton and natural rubber. Each pair uses about a pound of fiber. There is a "one size fits most" option, or you can provide measurements for custom sizing (see below). These pants work for both men and women. Women can order standard sizes or send measurements if needed. To order custom, please provide: Inseam (best measured by someone else) Knee to ankle, front and back rise Waist, hip, thigh, knee, and ankle circumferences Desired waist height (high, mid, low) Each pair is handmade to order, with a 2-4 week shipping timeframe. Please allow extra time if needed. Note: alpaca may feel itchy for sensitive skin in certain areas. Visit woollywhotknots.com for other items. Hand wash when necessary.