Most one-piece suits have a drop-seat design (a zippered flap at the lower back) or a front zipper that extends low enough to pull the suit down. Women's models typically feature a rear drop-seat zip that allows bathroom use without removing the suit or unzipping the front. Men's models may use the front zipper combined with a fly opening. Practice at home before taking it to the mountain—it takes a few tries to get comfortable with the routine.
Ski Underwear · One-Piece Base Layer Suits
How do you go to the bathroom in a one-piece base layer suit?
Related gear types
If this answer nudged you toward a different style, these guides compare specs and trade-offs.
Midweight Base Layers
$35 – $130
Versatile, moderately insulated base layers that are the most popular choice for typical winter skiing conditions.
moderate insulationgood breathabilityeffective moisture wicking
Heavyweight Base Layers
$45 – $160
Maximum-insulation base layers designed for extreme cold, low-activity skiing, or cold-sensitive individuals.
thick fabric constructionhigh insulationbrushed or fleece interior
Merino Wool Base Layers
$50 – $200
Premium natural-fiber base layers prized for odor resistance, temperature regulation, and next-to-skin comfort.
natural odor resistanceexcellent thermoregulationsoft next-to-skin feel
More questions
- Are one-piece base layer suits too warm for spring skiing?
- What if the suit fits my torso but is too long in the legs (or vice versa)?
- Can I wear a one-piece base layer under a ski racing speed suit?
- Do one-piece base layer suits work for snowboarding?