Three Cap Straps, a carabiner and a sticker. That's the whole catalog, and it's that short on purpose.
The Cap Strap is an aluminum ring that screws onto a Nalgene under the cap and gives the bottle a hard attachment point: one main loop for a carabiner or rope and two smaller loops for a lanyard or tether. It comes in three sizes because Nalgene makes three thread patterns, and the fit guide sorts out which one is yours in about ten seconds.
The Metolius FS Mini II is the carabiner we clip to our own bottles. It's a full-strength climbing carabiner at 25 grams, so ring and carabiner together still come in under 40 grams. Everything here is made in the USA, and US orders over $40 ship free.
32oz Wide Mouth Cap Strap $19.95 /
16oz Wide Mouth Cap Strap $19.95 /
Narrow Mouth Cap Strap $19.95 /
Metolius FS Mini II Carabiner $7.95 /
Tahr Equipment Transfer Sticker $2.50 /
