Which fits better over a shirt?

The Fine Merino Wool Half Zip Jumper. Its regular fit leaves room for a collared shirt underneath. The Navy Half-Zip is slim fit and sits close to the body.

Is one warmer than the other?

They should be close. Both use 100% wool for the main body, so warmth depends on the knit weight rather than the listed specs.

Which is better for a slim build?

The Navy Half-Zip. Its slim fit follows the body instead of hanging loose, which suits narrower frames.

Is either worth the extra?

Neither costs extra. Both are $85 at Amazon as of November 5, 2026, so pick on fit alone.

Can I machine wash either one?

No. Both are labeled hand wash only, so machine washing risks shrinkage and felting.

Do they come in other colors?

The Navy Half-Zip is shown in navy. The Fine Merino Wool Half Zip Jumper listing does not name a color, so check the store page before ordering.

Reiss Fine Merino Wool Half Zip Jumper vs Reiss Navy Half-Zip

Both are Reiss merino half-zips at the same price: $85 at Amazon as of November 5, 2026. The real choice is fit. Buy the Fine Merino Wool Half Zip Jumper for a regular, roomier cut that layers over a shirt. Buy the Navy Half-Zip for a slim, close-fitting look worn on its own.

Ask our shopping agent

It checks today's price at every store, compares the alternatives and answers in about a minute.